Apparently, a Medtronic MagPro Compact's street price is around $1000* . I might try to find me one.
* https://www.medwow.com/item.php?search_results=&sale_id=...
* https://www.medwow.com/item.php?search_results=&sale_id=...
In theory any sufficiently powerful EM field could kill a person. However it's fortunate that magnetic fields diminish significantly with distance, so the primitive parts of our brain that control bodily functions are relatively protected so I wouldn't be surprised if they start researching ways to use this as a stun weapon.
Handled unproperly they can trigger epileptic seizure.
Furthermore, the effect depends on the brain area you target and the frequency of the stimulus. If you can't aim precisely, you won't get the expected results. For precise aiming, you need to coregister your stimulator with an MRI of your brain.