Kryptonite propose up to £2500 money back if your bike get stolen with their lock:
Kryptonite
Now I don't know if it's a scam or not, because I haven't heard of anyone being refunded after their bike have been stolen.
Main reason: The paperwork.
A. Registration: You have to register your bike to Kryptonite within 15 days after purchase, provide the original receipt (dated and signed by the seller) of the bike and the lock, proof of the bike registration
B. When stolen: You have to report to the police, provide them the broken lock and take picture of the "crime scene". Then after you have the send the police confirmation, the broken lock and picture to Kryptonite.
And then, they determine if you qualify for the refund... No one succeeded yet to complete all these task... But may worth a try.