Hi Marc, that's exactly what a Drop Shipper does. You list their items and then when a sale is made, they ship directly to the customer, not to you.
All you need to do is search the directory for a Drop Shippers who deal in the market you are interested in, of course in this case you would be looking at US based ones to keep your charges down and provide a speedy shipping service.
Of course you will still need to do plenty of market research, both on your supplier options and on your eBay comp to ensure you have a viable market to aim at up front.
Cheers