how long dose a buyer have to pay for an item after he has used the BUYIT NOW BUTTON

[claire1481]

You can open an unpaid item case after 48 hours, there is no real deadline for how long to pay. In future you can select immediate payment required when listing items, this appears near your paypal email address on the sell item page when your listing

[lost.parrot]

As the other poster has said, if you are concerned then for future transactions the immediate payment option for BIN's  might be a way to go.

Other than that, open a unpaid dispute, if it's more than 2 days, or contact the buyer either via email or telephone. The last you can request if it isn't available. If the buyer has some history there may be reasons they haven' t paid;Contacting them first if possible, might be the best way to start with.