OK, here's a small one for you. Go to your photo gallery, the 0.50 and $1.00 are centered the remaining groups (5.00 and up) are not. Again, nothing bad and I like the design - just a minor glitch. It may just be firefox. I'll check it out in Internet explorer as well.

On your inventory page, everything is centered until you get to the $1000 section. Again a minor point but the next time you do maintenance you can fix that. It doesnt detract from the site.

And just a minor point - you should be wary about putting a mailto: link on your page. You'll start to receive lots of spam - to the point where the spam outnumbers the real mail.