Who pays for return postage?

I sold a vintage camera online for $5 reserve < very cute vintage Nikon 70s camera

Why? - I stated in the auction that I have not touched it for years (last used was like 2005) and wasn't sure of the condition. I did not deceive anyone since I didn't test it out before I sold it etc. Why would I scam people and make a high reserve when I don't know the state of it?

Before auction closed, no one asked me about the condition or to check anything. So I wasn't responsible for people bidding high as they did (top bid was around $60)

The buyer received the camera TELLING ME AFTER THE AUCTION that he just bought it for the lens and wanted a full refund PLUS the return postage. Threatening me to place bad feedback and saying I didn't reply his emails when in my inbox, trash and spam there was none. He was very unhappy and so was I to give the refund back!

I'm happy to give him the refund of the item and the postage that I SENT HIM, not incl retun postage.

He keeps complaining to me when he hasn't even sent the camera back yet…

What do you guys think?

p.s. This is a TradeMe issue! I'm not a business I was just selling my vintage items that I don't want anymore.

It's obvious. He can't return the item if he doesn't pay postage. Stop worrying. You've done your part of the bargain legally.