An air powered one would be a lot cheaper, I have a Marson that I am really happy with.The problem is when pop rivetting ridge or hip caps on standing seam roofing. You have a drill, several duckbill clamps, snips, tape, and then a third hand is needed to operate a two handed riveter. I was hoping a nice electric powered, corded or cordless one handed riveter would be very handy. Actually found one for a mere $700! Just wondering if anyone knew of something?