[Chewbacca]

Alright, finally got time a play a little and I know why I misunderstood.

You can buy back sold items for the same amount $ sold as long as it's the same session with a merchant.

If you sell stuff, close the merchant screen, and come back later the prices go back up to regular and the stuff is no longer listed under the buy-back menu.

So if you sell the wrong item on mistake, there isn't a penalty for buying it back right away, but there is if you wait.

UK John- AFAIK the console versions of the game have the same content as the PC, the only key differences are camera viewpoint and controls.