Amazon sells the "Weber 7436 Replacement Hinged Cooking Grate" for $19.99,
https://www.amazon.com/gp/product/B000WEPHKW/ They say
4mm stainless steel hinged grid with 5 year warranty
Compatible with Weber 22.5 inch One-Touch Master-Touch 22.5 inch Bar-B-Kettle Performer
22.5 inch diameter hinged grid
Heavier gauge than OEM specifications
Flip-up sides allow easy addition of briquets
Great for slow cooking
Since it sounded too good to be true, I wrote to Weber and they replied
From
Mike (Weber Grills)
Jul 27, 11:52 AM CDT
Hi Richard!
Thank you for being a Weber fan! The 7436 hinged cooking grate is made of plated steel. The stainless steel version of the grate is item 80728 and costs $65.53.
We cannot take credit cards over email but our call center can get that ordered for you. Please give us a call at 1-800-446-1071, anytime from 7AM-10PM CST, 7 days a week.
Thanks!
Mike