from the ebay help site:
"You can't have more than one fixed price listing of an identical item at the same time.
You can have more than one auction-style listing for identical items. However, only one duplicate auction-style listing without bids appears on eBay at a time. Separate listings may be created for the same item on different eBay sites, as long as the international shipping options don't result in the listings cluttering the search results of any individual site. Learn more about how duplicate auction-style listings appear on eBay.
The following types of listings, if they are for identical items, are considered duplicate listings even if the listing format or details vary:
An auction-style listing with the Buy It Now option and an auction-style listing without the Buy It Now option for an identical item.
A fixed price listing and an auction-style listing with the Buy It Now option for an identical item.
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