I picked up a 4x8 steel for 55.00, it's what I used in my stickburner. I was able to pick up some SS expanded metal "drops" from a local fabricator for cheap. Full 48"wide, various lengths, none over 16". Made a bunch of charcoal baskets for UDS's out of them. You might try going that route if you want SS and tacking them together to get your size.
Homegrown 120 Gallon Reverse Flow, Homey, the Homegrown Kettle, 3 UDS's, 3 Stack Pro Q Excel 20, 18.5" Elderly(but not retired) WSM, 150lb Capacity Homegrown Electric and a CA gasserrrr
Bicycle Fast Polder Thermo, Indisputably Fastest Purple Thermapen, SAI Satay Grill