has ANYONE had any experience with dent wizard? i hear that they are great, but how about cost? i have a dent for the past 2 years that's finally bothering me. no paint is scratched off of it, it's just when i first got the car, i was a moron and couldn't park. i tapped the car next to mine and it popped the door panel in slightly. from a far you cannot tell, but you can feel it upon touching the door. how much do you guys think something like that would cost?