Board Thread:Questions and Answers/@comment-2601:194:837F:1EF:A04D:F7:130E:4FA6-20171109002418/@comment-26828130-20171109054839

As far as i know, there's no such list at the wiki, for the simple reason that "ordinary" shop items can be bought at any time when they're needed (like the Wire Carrier for ). Rewarded items on the other hand, can't be sold if they are required for another contract or achievement.

If you are in need of storage space, put the wagons that you don't want to sell behind your biggest (unused) loco's and store them in depot. Sell all the wagons that you can buy in the shop, you can always buy them when the time comes that you need them.

Items that are once bought with gems, as well as rewarded itens that are required for another contract/achievement, don't take storage space. You can recognise them by the amount numbers in green squares.