‘72 Twin Reverb. To buy or not to buy?

Not sure what to do with this listing of a twin reverb, price seems way too low/good. Says that the tubes, reverb pan, and capacitors are new and the amp was just serviced. Listed at $525 usd ??? I’m not too savvy when it comes to tube amps and this would hopefully be my first. Just need some help discussing would should I be looking for in these amps and whether or not this is a good deal. Any words of wisdom?