[Halcyon]

Sometimes items go for pennies and sometimes thousands. It just depends on the amount of goods for sale (if there are less everyone will focus on one item), amount of people interested in the goods, the time of year eg. no one will buy a Christmas CD in Summer, and the rarity of the actual goods.
If only 10 were made all over the world, there will be more bidders hunting for it and paying more as it is very hard to get hold of.

It also depends on when you auction your items as if you have items finishing when everyone is at work, you will have less people bidding on it than on a Sunday night when everyone is mostly at home.

Then comes the presentation of the goods. The better described the product is, the more likely it is to sell.