You need to give a budget and an idea of exactly what you want to do with the machine. Just still pictures? Videos? Etc.
I count with about 20-30 dollars I could maybe stretch it to 40 but that is the limit. And I want it to take video footage it doesn't matter if it wouldn't take pictures.
This isn't enough money for anything very good. If you can find a sale the Syma X5C may be the best model for you at that price.