Greetings GG&A!
I'm looking into investing in a tube amp and I've discovered a JCM 900 4500 equipped with ruby tubes for sale.
The seller is asking $500 for it. It's in decent condition.
Should I pull the trigger?

As a side-note:
I play all-styles of rock. I think the heaviest I'd need to go is Thrice circa Illusion of Safety.