I want this tool, but how I know for sure to buy from the right guy a it doesnt be a scam?
Nowadays, the tool that is sold here is not worth all that much if you need it for Amazon or Netflix. It only works well with Hulu.
About how not to be scammed: Ask a lot of technical questions and first and foremost always ask for proof by demanding either (recently made) pictures or a video showing how it works.