i e mailed them and googled their address, they are a tint shop in fl, this is the tint they install on customers cars. it is died tint, but mines up for a year and is still black, no purple at all. they told me they have this tint made to their own specs.
if you read the reviews on their ebay page, any complaints are due to installer failure. or lack of any sense.
like i said watch a few hours of you tube tint install vids and give it a shot, its not that hard, just take your time, and clean the glass really good.