The TEK 2235 is a good analog scope, common as apples, and can be had for a good price on ebay. Problem is, not all of them work. l recently bought 2 for spare parts. Both were advertised as powered on, unable to test further. Each was about $100; neither worked. One was a very easy fix (input resistor had come loose). Fixed that and it works great. For other, don't know yet what the problem is. I bought it primarily to get the back-up military version CRT, so don't really care.
Moral of the story is there are some bargains on ebay and a lot of junk. There is a dealer on ebay in Iowa who I got my frst TEK from, and it has worked well from the start. He guarantees them, and as I recall, they are around $300. John