Marine Primary Gradient - for 450 TCs
Radioactive Primary Gradient - 1200 TCs <--- this is out of stock in torishop atm
Radioactive Torso - 700 TCs

Those prices are the same as in the shop, I don't think people would regard them as cheap. :|
You could maybe lower yours a little, because I doubt you will sell much at these prices.

Ok prices have been edited.