It's considerably more expensive than $0, and just because $79 doesn't seem like a big issue in the heat of passion doesn't mean that you won't kick yourself for it later.
+1 for TestDisk. That gem literally saved my butt years ago when a controller failure on my old NAS almost destroyed all my data by turning all disks (Linux soft RAID1) into unreadable doorstoppers. And it wasn't like just a damaged partition table or anything like that; each file had to be recovered and copied elsewhere.
It will be able to help you more often than not, and it's FOSS.
[0] https://www.cgsecurity.org/wiki/PhotoRec
[1] https://www.cgsecurity.org/wiki/TestDisk