Not necessarily wrong but not a good idea is to list the same items on greedbay at the same price.If you want to take advantage of the lower fees here you really have to work at it.Give buyers an incentive to buy from you here rather than there.You could greatly reduce your item cost here & still make more profit than on greedbay.
eBid provides the platform for you to sell your items,it's up to you to get the customers to look at them.
The most important one being removal of your contact details from each listing.That's against the rules.