...in Southern California, particularly Orange County. I can order true 1/8" and 1/4" from my supplier (CalPanel) but there are many times I'm looking for a place I can physically go to that carries metric sized panels. Home Depot used to carry it but has been out of stock forever (I've tried 5 locations). OSH had it but they are dissappearing around here. Lowes has nothing and Ganahls is hit and miss.
And it needs to be laser cuttable. Not the pinkish, dense MDF that Home Depot sometimes carries.