I just took a quick look at the site.  I saw a $5 Amazon gift card for $7.  Why would anyone spend $7 on a $5 gift card?  You could trade the bitcoins through an exchange, transfer via dwolla and have cash in hand for less than that.  There is a definite need for someone offering the services you are trying to offer, but you need to offer a good deal.  You were not.  40% markup on products and then blaming people for not buying them is bad business.  Sorry you failed, but YOU failed.  Don't blame the community.