I think Snap-On are so expensive because in the US there is a "movement" who actually hunt down broken and worn out Snap-On tools so they can get them traded for new ones. Someone has to pay for these clowns and is usually the honest customer.
Sidchrome and Kinchrome can get away with an unconditional guarantee here because most of us don't bother taking them back. I have broken heaps of Kinchrome and never bothered to take them back, Ive always seen it as an opportunity to replace that tool with something decent! :smile: