Did it ever occur to you that when you buy a used car warranty, you are betting you "new" car WILL need a repair that will cost in excess of what you paid for the warranty. On the other hand the dealer is betting it WILL NOT, yet HE does not pay anything if he win the bet, but you do?
The is like the old sucker bet, were I guys says, "I'll bet you your pay check that you team looses." If they loose you must give him YOUR pay check. If your team wins you get to KEEP your pay check. ;)