How to add ping payment option after an auction is sold

You can't add a payment option after the auction has sold.

Can I receive a payment through ping a different way? Are there other ways my buyer can pay me instead of ping and through the bank?

The only way that I can think of is that you start another auction and add the Ping option. But that's going to get rather messy.

Just to clarify, Trade Me charge a success fee on all sales, and charge for Ping transactions also.

True, but Ping fees get added on top of success fees, not instead of.

I understand that Ping is on top. In saying that can a payment still be made after the auction.

Yes a Ping payment can be made after the auction, but Ping will have to have been an option on the listing already when it closed. If you wanted to accept Ping and the buyer has asked for it, you could always relist with Ping and when the original buyer buys that, then cancel and get a fee refund on the initial listing. A bit of mucking around, but if it's a higher value sale it might be worth the trouble.

 Thanks for that Gary, I guess it's a matter of will, where there is a will most things are possible unfortunately the will was just one sided, in this case I would have been happy to pay the fee.