Actually you can ask for payment in 5 days, 3 days, or 24 hours but....Figure it this way...you can't even file an Unpaid Item Dispute with Ebay until a FULL 7 days have passed. Give 7 days, and if you haven't heard from the buyer by then you can file a dispute on the 8th day. (or a full 7 days and 1 second)
I always file for nonpayer on the 8th day after I have sent them at least 2 invoices. Maybe they didn't see the first invoice, or forgot that they saw it, but the second one is just being overlooked at that point. Many times they pay me during the nonpayer period. More often not though.
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