You can get a brand new stainless steel Robinox for under $400 with pressed sides etc and 100% clean food grade joins. This is a home made pot, with by the looks tig around the outlet, and for the main pot and rolled section which I would say did not get pickled. Those welds that are not food safe and I would be hesitant using it as a Mashtun; as a kettle it would be ok as it is boiled. The old 82L kegs get $60 to $100 are are a good grade stainless. Last year I picked up a 100L s/s commercial pot, no seams etc with a heavy copper sandwiched based from ebay for $99. Hope this helps.
QldKev
QldKev