I paid $97 for the product. I agree that their page looks scammy, but I bought the product after a friend recommendation.

I usually never buy products like that because in most cases I could recreate it myself in ruby in a few hours, and to be honest that was my intention initially.

However I was impressed about the overall quality of the product and decided to buy.

They also have a series of videos that were very useful to me in case you are interested: http://www.noblesamurai.com/dojo/marketsamurai/

The product is made by people whose profession is internet marketing. I'm inclined to think that "scammy" style is what sells, to judge by how often it pops up.

That much is clear. It's also why actual scams are set up the way they are. Saying it's effective in no way means it's not sketchy.

E.g. the famous art gallery scam is what sells art near tourist attractions, to judge by how often it pops up.