I bought a TEK 2246 mod A from a guy on eBay. Turned out he was local; bought a second more cosmetic challenged one also. Put the rougher one into service first - it lasted about 3 months sadly. But, I had the nicer one to put into service immediately. It's been OK so far (about a year), but there's always that 1-2 second delay between pressing the power switch and the fan coming on and the front panel waking up, during which time I sweat just a bit.
"Is is going to work?"
To me, Tektronix is just that way. Nice 'scopes, but they are like owning a Harley Davidson motorcycle. If you love them, if you can fix them, if you don't mind oil stains on your living room floor and the smell of carburetor cleaner, go for it.
Otherwise maybe just buy an older analog Kenwood or Kenwood-built B&K, that just works. (I'm sure this applies to Hitachi and some other pacific rim products as well.)
Still, I could not help myself the other day. I won an eBay auction for a 465 with video sync option for 85.00 plus about 24.00 freight. Taking a bit of a risk, it was sold as, "for parts or repair" but the pictures revealed the front panel controls were WAY wrong to show a proper trace (showing B time base intensified, focus and position controls fully clockwise, etc).
I expect it probably works, but I don't know if I'm man enough to fix any really kinky problem it might have...
And the things are about 40 years old now, so there's all those cap problems and they aren't the easiest things physically to work on...
Starting to sweat again...
Edit 8-3-2013:
Open 5500uF C1542 in main power supply 15v source. Replaced it, now had functions work but still had blanking related problem. Actually could not turn intensity down to cutoff. Shorted 1uF at 150 volt (C1481) CRT bias circuit, hidden under the high voltage shield. Probably your Tek geeks have seen lots of these issues...
Older Tek scopes can be a little scary, for me anyway, but got a good working 465 with video sync option for 85.00. Not interested in a full re-cap of the power supply at this time - it's a big job, and I got other stuff to do...
I'm a happy guy at this point.