The odds that both the motor and controller are bad are pretty low. In 14 years I've never seen a bad motor. I have seen plenty of bad controllers. That's purely anecdotal of course. But generally the motors are not the problem.
You can see the controller on a repair I did here. It doesn't look like much. But trust me when I say that it's really expensive. Carrier especially likes to charge up the ying yang for parts. That's just an opinion that I'm sure some Carrier dude will take exception to. Unfortunately such controllers are OEM only.
As far as pricing goes, I doubt you know how HVAC companies operate these days. Prices have skyrocketed, and rightfully so. I wrote this to help some people understand and to annoy the rest.
edit: I saw your last reply after I posted this. Anything is possible I suppose. But that they dropped the price to 40% of what it was? I'm skeptical. I think it more likely that they "suddently realized" that the controller is all they need to replace rather than the motor. But I'm a cynic, so pay me no mind.
As far as who the forum is protecting, that would be itself and the homeowner. You want to see never ending and utterly worthless debate? Just start allowing prices to be flung around. This is a national forum. A reasonable price for one area is not for another. But boy-howdy will guys post as if they know something they don't. And you should know that going for the lowest price on service will often get you ripped off. The services of a good tradesman commands a high price. Start catering to the lowest common denominator and the hacks would flood the forum to tell everyone that the rest are too high priced. They'd feed the myth that low bid is the way to go. Homeowners would suffer as a result.