How can I figure out how much to bid on a parking space?
If the cash flow information is complete, the valuation can be determined with relative accuracy and precision. Assuming the monthly rent is correct, the annual revenue is $1,600 per year, $250/mo * 12 months - $1,400/year in taxes. Real estate is best valued as a perpetuity where P is the price, i is the income, and r is the rate of interest.  Theoreticians would suggest that the best available rate of interest would be the risk free rate, a 30 year Treasury rate ~3.5%, but the competition can't get these rates, so it is probably unrealistic. Anways, aassuming no expenses, the value of the property is $1,600 / 0.035 at most, $45,714.29. This is the general formula, and it should definitely be adjusted for expenses and a more realistic interest rate. Now, with a better understanding of interest rates and expenses, this will predict the most likely market value; however, it should be known that whatever interest rate is applied to the formula will be the most likely rate of return received from the investment. A Graham-Buffett value investor would suggest using a valuation no less than 15% since to a value investor, there's no point in bidding unless if the profits can be above average, ~7.5%.  With a 15% interest rate and no expenses, $1,600 / .15, is $10,666.67.  On average, it is unlikely that a bid this low will be successful; nevertheless, if multiple bids are placed using this similar methodology, by the law of small numbers, it is likely to hit the lottery on at most one bid. "Scenario 1: Assume that you plan to keep the parking space for the rest of your life and collect the income from the rental. You say these spaces rent for $250 per month and there are fees of $1400 per year. Are there any other costs? Like would you be responsible for the cost of repaving at some point? But assuming that's covered in the $1400, the net profit is 250 x 12 - 1400 = $1600 per year. So now the question becomes, what other things could you invest your money in, and what sort of returns do those give? If, say, you have investments in the stock market that are generating a 10% annual return and you expect that rate of return to continue indefinitely, than if you pay a price that gives you a return of less than 10%, i.e. if you pay more than $16,000, then you would be better off to put the money in the stock market. That is, you should calculate the fair price ""backwards"": What return on investment is acceptable, and then what price would I have to pay to get that ROI? Oh, you should also consider what the ""occupancy rate"" on such parking spaces is. Is there enough demand that you can realistically expect to have it rented out 100% of the time? When one renter leaves, how long does it take to find another? And do you have any information on how often renters fail to pay the rent? I own a house that I rent out and I had two tenants in a row who failed to pay the rent, and the legal process to get them evicted takes months. I don't know what it takes to ""evict"" someone from a parking space. Scenario 2: You expect to collect rent on this space for some period of time, and then someday sell it. In that case, there's an additional piece of information you need: How much can you expect to get for this property when you sell it? This is almost surely highly speculative. But you could certainly look at past pricing trends. If you see that the value of a parking space in your area has been going up by, whatever, say 4% per year for the past 20 years, it's reasonable to plan on the assumption that this trend will continue. If it's been up and down and all over the place, you could be taking a real gamble. If you pay $30,000 for it today and when the time comes to sell the best you can get is $15,000, that's not so good. But if there is some reasonable consistent average rate of growth in value, you can add this to the expected rents. Like if you can expect it to grow in value by $1000 per year, then the return on your investment is the $1600 in rent plus $1000 in capital growth equals $2600. Then again do an ROI calculation based on potential returns from other investments."
"Re: A trader when buying needs to buy at the ask price and when selling needs to sell   at the bid price. So how can a trade happen 'in between' the bid and ask? Saying the trade can happen ""in between"" the bid & ask is simplistic.  There is a time dimension to the market.  It's more accurate to say that an order can be placed ""in between"" the current best bid & ask (observed at time T=0), thus establishing a new level for one or the other of those quoted prices (observed at time T>0). If you enter a market order to buy (or sell), then yes, you'll generally be accepting the current best ask (or best bid) with your order, because that's what a market order says to do: Accept the current best market price being offered for your kind of transaction.  Of course, prices may move much faster than your observation of the price and the time it takes to process your order – you're far from being the only participant. Market orders aside, you are free to name your own price above or below the current best bid & ask, respectively. ... then one could say that you are placing an order ""in between"" the bid and ask at the time your order is placed.  However – and this is key – you are also moving one or the other of those quoted prices in the process of placing your above-bid buy order or your below-ask sell order. Then, only if somebody else in the market chooses to accept your new ask (or bid) does your intended transaction take place. And that transaction takes place at the new ask (or bid) price, not the old one that was current when you entered your order. Read more about bid & ask prices at this other question: (p.s. FWIW, I don't necessarily agree with the assertion from the article you quoted, i.e.: ""By looking for trades that take place in between the bid and ask, you can tell when a strong trend is about to come to an end.""  I would say: Maybe, perhaps, but maybe not.)" I've found the systems that seem to work. Firstly, you need to find how much money is required to pay for the withdrawals after retirement, while still accruing interest.  I couldn't seem to do this with an equation, but this bit of javascript worked: yearsToLast: Number of years of yearly withdrawals yearlyWithdrawal: Amount to withdraw each year interest: Decimal form of yearly compounding interest Now that we have how much is required at the beginning of the retirement, to figure out how much to add yearly to hit this mark, you'd use: amount: Previously found required amount to reach interest: Decimal form of yearly compounding interest yearsSaving: Number of years saving till amount needs to be hit I hope this helps some other poor soul, because I could find squat on how to do this. Max Based on your situation, I'm not sure it should be an either/or sort of choice.  The less debt you have the better, but because the HELOC is secured debt, the interest rate should be rather low.  If you're trying to build a cash cushion for emergencies, it may help to figure out a few things first: Once you know how much you want to save and how long it will take, you can figure out how much longer it would take of some of the savings were diverted to debt reduction. If your credit is good enough to get a HELOC in the first place, putting some of your cash-flow toward both goals is an option worth considering. First off, great job on your finances so far. You are off on the right foot and have some sense of planning for the future.  Also, it is a great question.   First, I agree with @littleadv. Take advantage of your employer match. Do not drop your 401(k) contributions below that. Also, good job on putting your contributions into the Roth account. Second, I would ask: Are you out of debt?  If not, put all your extra income towards paying off debt, and then you can work your plan. Third, time to do some math.  What will your business look like?  How much capital would you need to get started?  Are there things you can do now on a part-time basis to start this business or prepare you to start the business? Come up with a figure, find some mutual funds that have a low beta, and back out how much money you need to save per month, so you have around that total.  Then you have a figure. e.g. Assume you need $20,000, and you find a fund that has done 8% over the past 20 years.  Then, you would need to save about $110/month to be ready to go in 10 years, or $273/month to go in about 5 years.  (It's a time value of money calculation.) The house is really a long way off, but you could do the same kind of calculation.  I feel that you think your income, and possibly locale, will change dramatically over the next few years.  It might not be bad to double what you are saving for the business, and designate one half for the house. In order to arrive at a decision you need the numbers: I suggest a spreadsheet.  List the monthly and annual costs (see other responses).  Then determine what the market rate for rental.  Once you have the numbers it will be clear from a numbers standpoint.  One has consider the hassle of owning property from a distance, which is not factored into the spreadsheet Ok maybe I should have went into further detail but I'm not interested in a single point estimate to compare the different options.  I want to look at the comparable NPVs for the two different options for a range of exit points (sell property / exit lease and sell equity shares). I want to graph the present values of each (y-axis being the PVs and x-axis being the exit date) and look at the 'cross-over' point where one option becomes better than the other (i'm taking into account all of the up front costs of the real estate purchase which will be a bit different in the first years).  i'm also looking to do the same for multiple real estate and equity scenarios, in all likelihood generate a distribution of cross-over points.  this is all theoretical, i'm not really going to take the results to heart. merely an exercise and i'm tangling with the discount rates at the moment. I can't say I know everything about the underlying details, but from what I understand, your limit buy adds to the bid side of open orders, and one possibility is that someone placed a market order to sell when the bid price for the stock fell to $10 which was matched to your open limit order. So using your terminology, I would say the spot bid price is what fell to $10, even if for a brief moment. Whether or not it is possible for your order to be filled when the limit buy price is deeper than the current bid price is beyond me. It may have something to do with lot sizes. When my orders fill, I'll often see a 1000 shares go through over 4-6 transactions, with a few cents difference high to low, but totaling the transaction cost, it adds to one commission (say $10 for my broker). Are you sure a series of partial fills would result in as many as 20 commissions?