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If you do take paypal with Ebay Auctions i would wait 48 hours untill transferring that domain"Allows enough time for paypal to email you saying they are looking into a fraud complaint"
When i sold mine with ebay "Paypal emailed me 12 hours later and ebay emailed me 1 hour after the auction saying it was fraud.

Its up to you how you want to sell domains but be careful=I was lucky to get them back.

Plus pull up the contact info for the buyer on ebay and give them a call ask them if they bought a domain