I don't think I've seen these, but the other one or two visit dealership visit shops normally go for $50 and $75 each. So in this respect, $30 is low. But it also depends on what is required.
The ones I do/did you have to sit down and get written quotes for a lease and a purchase for a certain vehicle. It also requires a copy of the window sticker that can either be a picture of the car's window or the better is when they print one out for you. Then you have to go back and request a better price either via phone or e-mail or in person, hence the one or two visits. That's usually the pain in the ass part of the one call shops. They want you to come back and don't want to e-mail new offers to you.
I've done as many as 4 of these since there is a street in Dallas that has every dealership in the universe on it right next door to each other. I did 8 dealerships in two days at $75 each. It was a @#$%& writing up the reports each day.
I tend to stay away from these now as the guy they are done for (I think he's a one man operation) is a real pain in the ass to deal with and he's the one who tells the MSC whether he'll accept your shop or not.
For instance, he rejected one shop I did because I didn't get a quote for the "extended chassis" vehicle. The salesperson said only taxi and limo companies buy those vehicles and they deal with fleet services.
But yours seem to be for a different MSC. The ones I did, the MSC also does ATV and UTV shops. And I think recently the Arby's shops.