That should sell for $100 no problem. Add more pics and also at this time of year try to sell it as a cooler to brine your turkey and and a fryer that will cook more than one bird at a time.
Think like a salsmen and you might get $200 for it. Sell ice to alaska, oil to texas, oranges to fl, sand to az, and solar power "farmed" in othet states to ca
I dont know what you have for gaskets now but silicone o-rings or copper washer gaskets will take that temp no problem.
Im not saying to be a used car salsman but if somebody buys this to fry a turkey, they will have some DIY in them and just tell them it might an upgrade in o-rings for that kind of temp.
Keep posting to cl and fb. Is there a local buy sell trade fb page to post to.