Purchased at Lowe's about 7 years ago for about $600. The mechanism which connects to the pan is rusted and likely needs to be replaced.
Model: HYFP50095-19
Manufacturer: Bond Manufacturing
Here it is: https://www.lowes.com/pd/Bond-Bond-Signature-36-6-in-W-50000-BTU-Brown-Comp...
Uses a standard 20 lbs propane tank.
My belief is that if one knows what they are doing, this can be easily fixed with up to ~$200 of parts.