Send an empty envelope with delivery confirmation to some random address in the city they live in. They will email you after a bit wondering where their item is. Tell them you thought they had it already as tracking shows it as delivered. This way it looks like you sent it as far as they know. Be very apologetic and play dumb and offer a replacement (if you have the items by then) or offer a full refund. You should come out okay and the buyers shouldn't be too pissed. Take everyone's advice on here and DO NOT dropship again. Take AmazonStealth's advice and don't sell ANYTHING until you have it in hand.
Your F-ing brilliant. Awesome idea
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