It is not possible to have the same item auctioned on more than one site.
What would happen if you sold one item to more than one person?
We suggests that you try various auction sites out, and determine
which one is best for your money. One strategy might be to keep
most of your auctions here, since they are free, and try other sites
as you desire. Just make sure that your auction here is not active if
you decide to sell the item elsewhere!
Another approach might be to list all your items here at a fixed price
(a classified). Then you can auction the same item elsewhere,
or even on EPage Network Classifieds itself, and only remove the classified
once the item sells.