Inquiry of interest

So I can make a product on htgsupply for far less and probably sell it for 10-15 (shipping included) compared to their 32 and list it legally in the US on ebay.

I'm just doing an inquiry on this as I know next to nothing when it comes to growing cannabis

Here is the product
http://www.htgsupply.com/Product-Exhale-CO2-Bag

You'd have to pretty much have the grow chamber sealed for something like that to work, wouldn't you? Then you'd need an air conditioner to cool it without exchanging the air, and a dehumififier to remove the transpired water, which would then produce more heat that the AC would have to cope with.