That Technics 1500 R2R above is a holy grail deck. It's worth big bucks if it works and the heads aren't worn out. There's a company that restores and customizes them and sells them for $4k and up.

I'm into Teacs myself. I have four now, an A-2300SX, an A-4070GSL, an A-3300SR and an A-3300SX2T. I got them all cheap because they didn't work. The only thing wrong with them was that the 35 year old grease on the moving parts had turned to glue. I replaced it with the same Park grease that I use on my bikes and they work great. Just like with vintage bikes, there are lots of them out there that were bought and sat unused.