McGeorge Toyota online in Virginia.
www.toyotaparts.mcgeorgetoyota.com
Also check Olathe Toyota.
Check with your local dealer to see if they will match price and avoid freight.
Also check with @arcteryx he's in Austin.
I bought a used tank from @slow95z and shipped it for a lot less than a new tank.
New tanks are around $485.
Cleaning tanks is time consuming and I would only consider it if there were no longer parts available, like for my Studebaker.
Never, ever coat the inside of a gas tank. It never...