from my point of view, your front page (and even your 'how we do it' page) is not really any different from the n number of auction/trading sites that I've seen.
I wouldn't have even known that you guys have system/mechanism of guaranteed payment (and even delivery?), had you not posted it here
I wouldn't have even known that you guys have system/mechanism of guaranteed payment (and even delivery?), had you not posted it here