Anybody heard of these?

Rusty, as technical editor I feel its your responsibility to buy one for each style carb out there and run a before and after comparision with graphs and charts and a paragraph on the back of each one. Oh wait, that's what the seller is supposed to do. Why no numbers, just a hand held video. And how much does a little piece of stamped steel cost, $40? And another thing, Holley, Edelbrock, Carter and all the rest of the carb manufacturers who spend gazillions on RandD missed this? It'll be at the dollar store next week.