Here is a less expensive 'fire pan' option....
Bayou Classic "Fold & Go" Portable Charcoal Grill - 500-410
I found one of these at Home Depot on sale for under $20. I added two small strips of metal flashing to block off the air holes you can see on the sides. Now it meets the BLM and NPS requirements for a fire pan!
It's deffinetly not as robust or as large as the stainless steel fire pans I see at River Shops. The metal is rather thin and I expect it not to last more than a few seasons. But it is very light and folds down small and comes with a nylon carring case.
It makes a good 'backup firepan' for trips that require that you carry a fire pan even during a state wide fire ban. A good size for a 12" D.O. and enough grill space to cook up 8 burgers at a time.