Your problem is either local, or you're not trying to sell them in the right way. They aren't going to be marketed the same way morphs are.

I produced mostly co-doms, and I have only 1.1 normals left from all of my clutches. They were, in fact, the first out the door! People wanted my normal males as pets. I put them up on Kijiji, I sold some to a good local pet store, and some went to co-workers of roomates, friends of co-workers of roomates, etc etc. I sold 2 of them at the local expo--and only one het male, and no other morphs, there (not the greatest for cash, but I did make a good trade, so no crying here).
I sell my normal males for 25, and people are overjoyed to buy them. The market here for normals seems to be plenty good, even though the economy is depressed and people are buying a lot less in general.