Goodwill, NextStep, or Saint Vincent de Paul. You could also asking the people at Video Game Headquarters for advice on where to find one. They’ve been able to help me track down a variety of random niche gaming stuff.
@dreamsprite @ch0ccyra1n Seconding this. I got my combo CRT + VCR at Goodwill near Thurston.
Agree with the other respondent; that Goodwill store is the best one I’ve ever been to! Hopefully you also got an A520 modulator with the computer, else you might be limited to the black-and-white composite video signal out the computer’s RCA jack. Tough/expensive to find a display compatible with the 15KHz RGB signal out the 23-pin connector.
@thouartfrugal luckily it did in-fact come with an A520 modulator! Saves me a lot of potential headache.
Don’t know for sure but the best I can think of is the Goodwill Computer Store over on Delta Oaks or the NextStep shop.