not a fan of the main banner. I'm not getting why you're using flash other than to have eye candy effects to "wow" the easily excited ones out there. It has no navigation, nothing is even clickable. Sorry, I'm a firm believer in not using Flash unless it provides something you can do in it that is not available another way. Besides, those background animations scream "stock flash" which runs the risk of a visitor having already seen the animation on another site, which to me, (as this may only be because i'm a designer, not a run-of-the-mill websurfer) cheapens the experience. Also, both it and the featured merchants animation are on the screen at the same time on my monitor, so my eyes go crazy trying to decide which to look at.
Also, you may want to focus some energy on getting it to up to web standards. It's not valid xhtml. it has 34 errors.
Validation Results - W3C Markup Validator
now that the bad is out of the way, I must say I like the setup of the navigation and overall layout of the site. you made it quick, easy, informative and to the point. All key elements of good design, and you nailed them.
So, maybe just fix up the code so that it validates and maybe consider an alternative to the fancy-pancy eye candy banner and you're good to go.