One thing that this Ebayer also does is to contact each bidder and then gives information in his e-mails to each bidder with the nudge that the bidder better get the item before someone else does, to increase the bidding...(I had a friend that bought from this Ebayer)

Giving the bidders more than they expect is a great technique to create desire, I think.

Additionally, this ebayer also creates the product himself from his experiences with clients and interviews, so he has fantastic profits as well.

Just my two cents.