Bottom line is you'll never know what you're missing if you don't check it out. And for what they're asking it had better include a decent testing CRT. A harsh reality is there's a minuscule market for this vintage of TV consoles. And after several weeks of no interest a smart seller would be willing to negotiate. But if it doesn't test good absolutely walk away. Or if you wanted it for the other parts you can make a low ball offer. Or tell them you'll take the innards for your time and effort of removing them from the cabinet.
The seller can then make a small fortune offering the empty cabinet to some repurposing artist.