Don't rule out the fact that there are a number of deals to be had at regular retail stores. I saw a B&N blowing out $20 Marvel Premiere Edition HCs for $3.99. So those could be an easy resell to someone who has nearby stores and knows the market.

I can normally buy $25-35 HC recent major releases from Marvel and DC at a local collectors market for $10 and sometimes as low as $5 that are still new and sealed. The retail goal is to turn over product and keep selling. Sometimes dealers get better inventive prices to move things that aren't selling. For awhile there were comic stores closing left and right so that meant alot of stuff available to be had in bulk including trades.