In the end it is just a numbers game. It will depend on how many people want to buy them. There is a good demand for live food here at this time of year and reptile people tend to talk to each other so the word will get out that you have them. You need to have them consistantly available and people will come to you if they are cheaper than the shops. If you need to sell to the shops to get rid of the numbers you have available they will not buy from you if you are selling privately at a cheaper price at the same time. I would say 40 to 50 cents each sounds about the top end price. I culture locusts for my own use and I think you will be lucky to recover all your costs unless you are selling heaps, but it does lower your own costs. I don't sell them.