I heard again about bitcoin in 2017 and immediately remembered my hard drive, which my grandfather had hammered into the wall of his garage as a tool holder.
All depends on the way he hammered it. If platters were not smashed to pieces there is still a chance to extract data from them but definetely it can be done only at the special laboratories. 30 -40
BTC it is about $300K - $400 K right now so I think for third of that you could find someone who will agree to try