How long for Ping payment to appear

There are a few things to check here.

Firstly, have you set your Ping account up with an account number and how often you would like PING paid out to you? Check to see its on daily. If you have there are these things here to check as well

Can you see that they have paid by Ping? You can check the transactions in the Ping part of your account

You can also see they have paid by Ping on your 'items I sold' page next to the item, it says 'Payment details & refunds"

Thirdly you could check your emails to see when it sold, it will say at the same time purchase complete and they have paid by Ping. 

Thanks for the reply nothing shows up in my Ping Transactions for this sale and no paid by Ping message on my sold items page. I just contacted Trade Me via live chat and they advised they are processing the payment and will inform me via email once they have. I thought Ping payments were instant the buyer tells me they used Ping with a debit card and that the money was taken out of that immediately.

99% of the time ping is instant as you say.

However sometimes ping payments get flagged. Larger value. New buyer. New debit/credit card. ISP address flag from overseas Different name on the card than associated with the buyers account....Could be quite a few reasons. It usually gets cleared pretty quick. Dependant on how fast the buyer replies to TM questions.

Obviously don't send the item until you get that email to do so. Even if you buyer is being insistent......

Yeah buyer is new they asked x36 questions on my listing x23 of which were in one day they have never used Ping before Trade Me Customer Support told me not to send anything until they have confirmed the payment although I never send any items until I have the money in my account. Four days to confirm the payment makes me think something is up though. Will have to wait and see I guess. Thanks.