I know it can be argued simply by "What if they just dont want that item to be sold so they cover it!", and I say well lemme show y'all a nifty little trick, *clears throat* now when you dont want something to be sold, set the fucking buy and sell value to "0" that way the item will not be listed on the shop lists, which inturn does not bait players into going to shops.
Essentially the problem is that when this sort of shit happens, it baits players into shops that does not sell the goods they advertise. Which is so fucking annoying, Do you know how many goodies and shit I can trick players into coming to a shitshack? Literally I could just put up "Enderman Spawner - 30k" "Perfect Diamond - 1k" etc, but I dont because I know how annoying it is.
Alsoooo I do know that in some cases, nide will break the block to let the player who brought it to his attention buy it for the set price, which is a bit of a punishment I suppose but seeing as nide is busy with his personal life, I doubt he'll rush online every time someone msg's him on IRC regarding this shit.
This is a few I could find just by thinking of making this post, reply to this post with some you found aswell!



