Sipen Online Shopping Launches

I have created this site for the purpose of allowing people to sell and buy products online easily. I am still tweaking the appearance of the site, and there are still quite a few features (basic features even) that I need to add, but I would like some initial feedback from people that are best suited to give it to me (other than the customers.)

Please let me know what you think.

Also, if you want to sell anything at no charge, simply sign up and use GRANDOPEN100 as the promotional code. (All uppercase) This code will give you up to 100 inventory slots, no listing fees, no monthly fees, no commission fees, no transaction fees, etc. until March 1, 2010. (No fees whatsoever until then.) The code expires December 31, 2009 so use it before then if you want to test it.