The imaginary friend

Yesterday I listed a bag on ebay for the first time ever, excitingly. It was a replacement for a bag that broke, but now I've lost faith in it (... so maybe it wasn't really intended for carrying laptops around) so I'm selling it as new but didn't want to go into all that in the listing, so instead described it as an unwanted gift (to explain why it's new/unused). Now I find myself feeling guilty for my ingratitude in selling it. Sorry, imaginary offended gift-buyer.