in reference to things like whips? IE trade in 10 whips for 50% for 1 hour. Or something, the thing I think is fun is you could make it scalable, where you can get 50% for 10 minutes or 10% for 40 minutes or something so you can please multiple types of players. Yes. It would work well too if it picked items based on your levels, and it wasn't easy to cycle through ones you couldn't or didn't want to do (some option but make it not trivial). Basically attempting to prevent the case of only a few items being used in the sink process, and therefor not providing a general sink. (See Moblising armies for many reasons why an item sink failed.) See letting people pick only a few items only works for a while because as supply goes down price goes up and people would naturally switch to another item. Mobilising armies failed because it isn't nessisary that why I suggested capping the max xp/hr at 20k, some people might do it, but the majority of players will pay items for an xp buff. And before anyone says rich get to do better you can limit that, and it helps with wealth redistribution and removing items.