Someone has bought my item as Buy it now when I never offer it, help please

[Bananalanacake]

I listed several items all starting at 99p as I always do. When I finish I go to Items I'm selling and find one has been bought and paid for with Buy it now! I am annoyed as this item is worth over 20 pounds. I have no idea how I did it, there's a tick option to offer BIN but I am sure I never ticked it, have i made a mistake somewhere. I have messaged the buyer to say 'sorry, mistake, I never offer BIN' and I am offering to refund them, does anyone know if I will be forced to sell it now they have paid or do I reserve the right to offer a refund. Thanks in advance.

No one Can force you to sell. Grovel & you may avoid neg f/bk & seller strike(s), but may not be able to avoid 10% Ebay fees.

Yes, no one can force you to sell but you risk negative feedback if you don't.

Thanks for your help both of you, I am still waiting for the buyer to reply to me, will update if they ever get back.

I've bought items for a lot less than the seller wanted and they never bothered to post them. Just said they did, (although they couldn't prove they had). Seller waited a week and when I mentioned I hadn't received they sent an immediate refund.

Thanks Wobbly, that's very helpful. They didn't reply to my message so I gave them a refund, I'll have to suck up the charges and any neg feedback - it's not exactly frauding as I've paid them back.

Really thinking of selling 'well worn' shoes which I've learnt about on MN but my mum has me as a seller she's watching so she sees everything I sell and all my shoes were once hers as I hate shoe shopping, she'll see me selling them and think WTF

If you do sell well worn shoes follow the guidelines to the letter ... google will help you there.

I had some shoes removed that I'm not allowed to relist because I made a mistake in my listing