The $99 guys are either "software only" (probably trying all the same stuff you would try as a computer tech) or scam artists trying to lure you in and jack-up the prices. At least that is my understanding.
I honestly think we are the best first option for anyone who needs data recovery. We are much safer and more thorough than any $99 joint and cheaper and more honest than any clean room. But, if it's not worth $300, then the best chance is you running software data recovery tools (like R-Studio, GetDataBack, or UFS Explorer - my top three favorites).
P.S. Thanks for the shout-out Compnet!