There are zero in user shops and only a handful in trades. I know that it is needed for an achievement, but am not sure what price range I should ask for it. Any advice?

i don't want to say stupid things but i see that some people sold them for 50-60m but wait some more references :)

Last one I was aware of sat in user shops for a bit and sold for 50m eventually.

, Thanks. It has been a while since I have seen them in user shops, and with none for sale currently I didn't exactly have a starting price reference to use and didn't want to sell myself short. I'll keep the 50mil range in mind.