I was out in the field today learning the xp deus and as I was digging up yet another bottle cap followed by a quarter, then another can slaw. I thought to myself I am going to try and keep a tally to see how long it take this machine to pay for it's self ( once I learn it ) I have a pocket full of change and a Bag of trash I have dug up with her so far. Anyone else keep track of what you find to see how long it takes to pay for your machine ?