Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Are my parents ripping me off with this deal that doesn't allow me to build my equity in my home?
The time to have looked into this is before you bought the condo, not now. You are presumably an adult. Your parents have apparently made it possible for you to have a roof of your own over your head for what is probably below rental rates (but I don't know your area, so can't say). From their point of view, they may have been doing you a favor, while giving themselves an investment opportunity. What would they be doing with that money otherwise, and at a higher or lower rate of return, and with greater or lesser risk? Where and how would you be living otherwise? More Importantly, if you can't talk to them about this you have bigger problems than money.