How long would you leave it before chasing up eBay payment?

[CopenhagenMaiden]

I know it’s a million times better when payment is made straight after purchase but how long would you reasonably wait before messaging a buyer to ask them to pay?

You can open a non payment case after 2 days.

I usually message them after that time period to asking them to pay within 24 hours, and if they don’t then I open the case.