Yes, old tube amps are almost always a good buy!!!! Googling it looks like the varitone saxes go for big $$, so the amp might too. $300 up to $1000 maybe.
only played a few times, got it for my daughter when she was in 5th-6th grade. she was awful, even worse when she got a clarinet.
Then we tried piano (we didn't give up on her) boy she turned out good on that. One of her piano teachers taught her how to pound the keys jazz style. She even got invited to play at Disneyland a few times.
Now 6 years out of high school that piano is only good for holding things I sell on feeBay. ;(