Well, I should clarify I wasn't saying they would likely sell the amp for $3.95, just that the company is likely to be legit. That's the only huge blunder I saw on a quick browse.
That website is sketchy as it gets. Wants date of birth lol. Also search interface doesn't work. Might be a fishing site. Most people keep their passwords the same and given your name, date of birth, email and password.. could cause some trouble for you