Hello! I'm looking into opening a grocery store, and am hoping to avoid common errors. Can you give me an idea what to watch out for?
Yes, if you want extra things like a pharmacy and electronics sections, you should visit a Supermarket, not a grocery store. They have the extra items you might need.
I want to open my own grocery store. 
It's a bit expensive to open a grocery store. If you are looking to own a small business, I'd recommend a convience store. It's a small retail business that stocks similar products but in smaller quanities. You can manage it on your own, and charge a little bit more.
Thank you! Why is it so expensive to open a grocery store?
Well, take for example, Loblaw. They have 136,000 full-time and part-time employees. At minimum wage, that would be roughly 300k an hour! Of course that's if you owned a chain. Labor is expensive.
Wow! I guess the days of the small neighborhood grocery are gone?
Yeah, there was a cooperative of District Grocery Stores in DC, Maryland, Northern Virginia, however they went out of business in 1972. I think the wholesalers beat them out with bulk pricing deals.
Ugh. Well, if I could open a place with some basic groceries along with convenience items - pantry items and dairy and some produce -- I'd be OK calling it a convenience store.
In some jurisdictions, you can increase your income from even selling alcohol, like beer and wine at your corner store.