OG_Dem0liton
First Step
I think it could be a good idea to add a sign similar to the "repair" sign in the enchanting area, but instead something like "Stabilize". The point of this sign would be to remove the "unstable" custom enchant from whatever item you are holding. Whether the price is a certain cash price or whether it costs exp lvls, I think adding this could help. The unstable custom enchant kills the price on certain items and renders most pieces useless, I think adding this sign would be more convenient for the players.