Good luck with trying to sell convicts. The LFS around me sell them for 4/$1.00. Convict breed so much unless you have a fish that will eat them you will never be able to get rid of the fry.
i'm actually looking for a good looking pair of breeding cons, and if i could help you guys get rid of them i think that would be even better. do either of you have pics of the ones your trying to sell/ get rid of? i'm new to cichlids and want some interesting ones that are on the easier side to take care of