then, why you do not buy from there?
I suspect he will instead.
Why would someone pay a premium to purchase from you, when they could instead buy it from Newegg or Amazon and:
a) have the item delivered by the end of the week
b) know that they'll have top-notch support
c) be dealing with a trusted vendor who they know won't run off with their money
d) spend less money
e) be the original buyer of the product, so they know that the manufacturer's warranty is valid (some products don't offer transferable warranties)
?
If you really want to sell these products, then I'd suggest re-considering your prices so that they're 10% to 15% lower than what people would pay for the item brand new from Amazon or Newegg.