The cost to manufacture that in stainless steel will be more than the AC unit. Unless as SUIYAN says you are ordering mass Qty (But I think the idea you are going to sell 20 million of these is a bit ambitious)

Unless you are selling to some kind of specialty-High end market. Then volume will be low. But they will pay for the quality. Alot of work to make very few high margin sales

That is why sharper image turned into a junk depot destination.