If that's from the lot of many (8 was it?), I almost bought one also. I backed out at the last minute because there was no detailed photo of the actual unit I would have been sent. I was was burned that way once, five of an item available but photos only of one, and of course it was the one in the best condition. The one I received was considerably worse looking.
Anyway, yours looks good. I'm looking forward to see what's inside, and $70 was a fair price. Most often those C series Tektronix devices are way overpriced, I guess because of the Tek name. I got a CPS250 not long ago for $99, which isn't bad I guess.