I have one of those. It's not a welding table, though I have used it as such. It's an EXCELLENT heavy duty workbench and will gladly hold up to transmissions and other heavy objects. I put mine on heavy casters with locks.
The only objection I have is that mine is 3 feet deep by 6 feet long. I would actually prefer a 24" deep one instead and I hate to cut this one.
For $50 each, those are no brainer purchases for anyone in the Portland area.