Depends on what you want to do with it. If it's just to hold things for welding, there is no need to spend a lot of money. Look on craigslist, your should be able to find a suitable vise for under $75. For my welding table, I bolted an old vise to a truck brake rotor. It's heavy enough to be stable for holding welding projects, yet can be placed in any position needed. I find it to be VERY handy.