I have some input, and it's constructive, though some of it may not seem that way. I love the fact that you're on the same boat as I am in terms of trying to be legit and professional, so here's my input.
1. First and foremost for me, in your pictures, your hat has that straight-brimmed, cocked to the side look to it that SCREAMS unprofessionalism for me. I'm not saying that the ballcap itself is unprofessional, and it could be the angle of the photos, but I'm just not a fan of the "style" of a straight-brimmed, cocked to the side baseball cap in the business world. There's no place for it at all. Save that for picking up women at the club or something. Mechanix gloves aren't meant to be used as detailing gloves unless they actually do make a "detailers" glove. So, in short, lose the baseball cap and put on some latex gloves. The rest of your attire is awesome. I need to get some shirts made myself...
2. I agree with the others, dark text on a dark background doesn't work. You have to strain to actually read what it says and the background is too "part of the advertisement". What I mean is the graphics pull your attention away from the information. It should supplement the information, not take away from it. Your second posting is much better, but whatever that is in the upper left-hand of it needs to go. Looks like Nepalese script.
3. Enlarge your satisfaction guarantee logo and set it centered under the middle photo in the second version or you could put it top left or right depending on your preference.
4. I'd have to really take a look at more of your work, but your prices are WAYYY too low for correction work.

I also agree that you shouldn't put your prices on a flyer. On your website, yes, on your flyer, no. Even on your website, make sure you state that all prices are estimates only and size and condition of the vehicle may increase the cost. On a flyer, I'd probably just try to entice the customer to visit your website. Something simple.
Anyway, just my personal preferences, so I hope I didn't offend. Good luck with your designer. I lucked out. My designer is not only a VERY skilled graphic artist, but he's a car guy and did my website, my cards and will design a bunch of other stuff for me in return for a full, hardcore detail of his car. I have no real limitations on how many changes I want to make. You're off to an awesome start though man.