Ok, I found a decent horizontal smoker in my area that i'm thinking of picking up. However, I need some cooking and charcoal grates. I went to the manufacturer's website and it would cost me like $100 for all new grates. That's not gonna happen. I've seen everyone using that diamond mess metal for grates in everythiong from UDS to propane smokers. Where can I find this stuff? I've looked in Home Depot and Menards and couldn't find it. How much does it usually cost?