Is this going to get me a free Premium Membership? : City of Heroes - Submissions

If you want to sell your Enhancements for more Influence, sell them to a Freedom Corps Trainer.

Actually only training enhancments sell more at a freedom corp trainers. To get the most out of selling enhancements take them to a store thats associated with its orgin. For DO's you can go to either orgin store for full price and if SO's directly to store that sells them.