I bought this neat little Kay 703c amp about 12 years ago for $60. I though I overpaid for it then. I cut the wires to the multi section cap can and solder in new caps and some other mods to made this "widow maker" safer. Turns out it is a great little amp and I used it quit a bit for recording and playing with un mic'd acoustic. Well fast forward to 2014 and I remember the little amp is in storage unplayed for at least 7 years. I got it out and powered it up and it still works and its still quiet. It was cool rediscovering this little guy. I went online to look for spare tubes and find these amps selling on eBay and reverb for $400. Really!?! I couldn't believe it. Why? Are these amps made from magic caps and solder too? They sound great with the right pups. But 400 bucks? I'll clone this amp for $150 and sell it for $400 then. I'm a recovering vintage snob so I understand the appeal of dust and mojo and the subsequent price. But the asking price for a radio tube cheapie amp from the early 60s shocked me. Is there something up with these amps? Did some celebrity get photographed using one and the prices went thru the roof like TS9s and Vibroverbs in the late 90's thanks to SRV?