Yeah I would . Lowball.
It may not have any issues at all. You'll
generally be able to tell if it needs slight fixing if there's noise in the headphone jack when you use it ( after cleaning of course )
It's the sort of thing I would grab right away, but that's me.
I use a 102 and it's good for what it is. Was my headphone amp for a while and now it's in the bedroom setup running stats as well off the speaker terminals. ( I use the tone control all the way up to high.) Not a monster powerful thing but never had a problem dealing with some of my orthos even. The link about the 102 below explains the volume control switching from class A to B then C as you go up, Best to stay below the 12:00 mark but you'll be able to hear the switch.( IF it's similar )
The circuitry inside should be easy to deal with for replacing stuff , nice and large PCB board and easy access to the capacitors. That's one of the next projects on the list.
It's also nice and compact and personally I love the black and aluminum face.
only 3 1/4 by 9 1/4 by 7 inches
The SA-102 regularly sells for $40 and up on ebay I noticed. I somehow got mine as a 3 piece set - matching tuner and EQ - all for $10
Try a lowball offer.
Tell them all these old amps have a hum usually and need an update with new capacitors to be safe.
I'm not sure about this particular model, but the SA-102, not bad:
Audion's Champ Amp It may or may not have the same circuit design,
here's the 101 from the Radio Shack catalogs.( '75- '79 )
http://www.radioshackcatalogs.com/catalogs/1978_small/
cool I bet the light is orange too.
This is all of course just my opinion. I love smaller integrated amps of that time period.