I just received my two burner brew stand from Fedex last night. I received four boxes total. I opened everything last night (like a kid on Christmas morning) and reviewed the parts list. My stand did not come with a shelf for the mash cooler to sit on. The pictures and the product descriptions all say that this setup comes with two burner shelves and one mash shelf.
The toptier is modular to your needs so you have to order/purchase each tier to your specs unless the company selling has packaged it from specific items in their inventory. I purchased mine as a package with 3 burners.