So, you read the title. No clue how it happened. I was changing prices for some stuff in one of my chest shops, and poof, somehow my pickaxe appeared below the red and green squares for changing stock? I tried to take it back out but it wouldn't let me, and being the idiot i am I forgot to take a screenshot before trying to go back to the main shop and then reclicking on the item. At that point it had disappeared. It wasn't in the shop, wasn't in the chest, and I even removed the item. No luck.
The pickaxe was a diamond one, enchanted with Fortune III, Efficiency and Unbreaking (One was II and one was III, but I can't exactly remember which was which) and Mending. Took me a lot of galleons to buy all of those enchanting books D:
Either way, this looks like a really weird glitch or bug but I'm not sure what happened and I just want my pickaxe back.