Lots of good advice.
I have some crazy high end American made vises that I'd never gotten without finding crazy good deals. The 6" Wilton I have retails for something insane like $1800.

And no... I didn't pay anywhere NEAR that. It is an amazing vise... so well built, and comes in around 185 pounds!
The one I use the most is a Chicom rotating head vise from Harbor Freight. I paid $35 for it in 1996. Now they're twice as much $$$ for half the quality. :thumbdn:
I definitely agree with the idea of finding a quality, used vise. CL is good sometimes, but there are a lot of people selling them on there nowadays that must be antique dealers. I saw a $15 HF drill press vise that LOOKED like it was 85 years old, listed on CL for $300 as a "heavy old machinist bench vise." I wanted to punch the seller in the face. Twice.
An even better bet (around here anyway) is a good flea market. It just depends on whether the seller is geared toward selling tools or antiques.