Wait, you sold every single one at $12 a piece? That is $480 for a weekend of work but your elbow swelled up like a softball, that part made me cringe just reading it. Nine hours of swinging a 3 lb hammer is wild, I usually tap out around 4 or 5 hours before my shoulder starts doing that weird clicking thing. And a blister the size of a quarter that popped mid-demo? I would have packed up right there, no way I could keep going with an open blister on my tong hand. The crowd loving it probably kept you going longer than your body wanted, that is how it always goes at demos. For real though, ice that elbow and take at least a week off before you touch the hammer again.