March 25, 2016 7:28 PM EDT
You get exp every time you sell something. I suggest waiting until you have like 50 iron daggers for example and then selling it, instead of selling like 2-3 at a time, if you know what I mean. This will give you much less exp.
You could put all your stuff after each dungeon in a chest, until you have a bunch of them, before actually selling the items.