Having taken all the responses on board, I have just sent one more attempt at a peace treaty with the buyer in hopes they will just accept their error.
If they still aren't happy then I'll just pay for return postage and refund it. But if they try to say postage was more than £1.26 then it will be another story altogether.
if you get it back made sure the next time you list it have the NTSC in font size 40.
Only when a return period is offered and the buyer has simply changed their mind. For items not as described or faulty, the seller pays the return postage.
People on this forum seem to have so much trouble with eBay, but I sell and buy stuff on it all the time and I've never had an issue.
eBay is good for buying £2 dvds, games, etc, but selling at that price point is usually never worth it. Tried it in the past and usually just more hassle than it is worth. OK for selling huge money stuff e.g a £50 phone but then you also run into the hassle there too.