I've heard the question "do you really need it"? My answer is no but....... I've always been a performance junkie regardless of need. Back when I was a kid I removed the governor off my go-cart to eeek out that extra .00001 of speed. Same with my truck, I found out they have a bolt on super charger, instantly I want it....
They have a 2gig tier but it alone is $199 a month. I'm no fool either..... :)