Please do not have a preconceived idea of how much you are going to sell on ebay.

There are experienced sellers coming to the boards asking for ideas of how to increase their sales, as things are very slow at the moment.

As a new seller you will experience the same slow sales, as well as buyers being a bit reticent to trust a new seller.

I would suggest you stick with the free listings until you have built up a reasonable amount of feedback for the items you are selling.