Yeah, that's a great grab. Those things are really expensive to replace.
I found a place near me that recertifies tanks, btw. It's a kind of commercial-level propane supply outfit, seems to serve lots of restaurants and food trucks. He re-certed my tank for 5 or 10 bucks, and it's good for 5 years (at which point I can have it re-certed again).
(yeah, that's right, my trusty 'ask no questions' friends at the U-Haul store must have gotten a visit from OSHA... ;-)