Data recovery services that dont break the bank [mechanical error]

i have a clients hard drive and i have diagnosed it to either a bad head or a failure to ramp, so it needs to be sent off to a clean room for repair. it was dropped while in operation. the only problem is the max amount of money my client wants to spend for recovery is around $300, which in most cases is unfeasible. i have found one, but i am not sure it they do mechanical errors

the one i found is 300dollardatarecovery.com and i like their policy, if they do not succeed they will not charge, this is also my own policy.

i can typically fix and recover most non mechanical hard drive errors but this goes beyond the scope of what i can do and the tools i have