I sold mine for 384 a few days ago

https://imgur.com/a/pM110li

The 340 keys sale from the previous suggestion was still indate when this was made, so this will need be resuggested with a range of 340-400.

Also this would be the compare that shows the 400 keys from your trade:

https://backpack.tf/profiles/76561198319798435#!/compare/1765584000/1765843200

Yeah I would give this the range as suggested in the comment above.

Closing here on account of my earlier comment. Feel free to resuggest at 340-400