u/AdAggravating3817

I am a UK seller selling off my childhood game collection. I've recently been adding international shipping options to my listings, and when I do so it asks me for the country of origin for the games. These games were all bought in the UK and are all PAL games, and eBay usually recommends either Japan or UK as the country of origin.

However, the info box for country of origin states that I should use the country of manufacture, not the country they were bought in. For example, all of my PS1 games state on the disc they were made in Austria. Should I be putting the country of origin for my PS1 games as Austria? Or should I leave the eBay recommended country of origin as either UK or Japan? Looking at other people's existing listings, there doesn't seem to be any consistency!

I've just been politely informed that the copy of Scurge Hive for the GBA I had listed on eBay is a bootleg - I've checked and the box has a slightly blurry printing and the board in the cart doesn't have a Nintendo logo. I've taken the listing down for now.
My question is: now that I know it's a bootleg, am I still allowed to sell it on eBay or would that be considered illegal? Is there any market at all for bootleg GBA carts or boxes? I know for sure that the game works fine as I played it to completion back in the day, and tested it when I listed it to make sure it still plays and saves fine.