I'd like to get some honest opinions about my irritation with a local camera shop (local being 30 miles away). I've always spent the extra money (vs online prices) to support this local shop, which included 2 DSLR bodies and several lenses. I know I'm not the top customer or even a special one, but I think I got kicked in the balls when I went to trade a couple of lenses for store credit. This particular store has a giant selection of used equipment, and honestly they sell it for a higher price than what can be found used online. Still, I buy from them to support the local guy. Long story short, I'd like to know what I should realistically expect for store credit value from the following 2 lenses: 28-105/2.8 Tamron (sells used on B&H for $450) 200-400 promaster (which is a re-badged Tamron- not very desirable I understand) Both lenses are in 9+ condition. Thanks in advance for your help.