You aren't expected to know the prices of all the items, or even any item for that matter. Who told you that? Player mods are just the same as normal players except they can mute and send priority reports in. Knowing the prices of items has nothing to do with it. i'm pretty sure he means that a lot of people expect you to know the price of every item in the game :wink:
hmm, its says nothing interesting happens when you try to pick them, so it could be a bug. But if it isn't bug i will be hating myself when they sell for millions ( like i hate myself for not being online when bunny ears and scythes were dropped)