Sold me a defective vape pen that leaked. I came back for him to fix it, and it still leaked. He apparently thought I was lying when I came back a second time after it continued leaking and we were unable to replicate the problem on the spot. He then said that all vapes leak, or that I was using it wrong, or that otherwise the problem was mine. There's a million vape shops in Vegas - I recommend finding another one which guarantees their products.