I bought a set of metric ratchet wrenches about 3-4 years ago and on the 15mm ratchet pawl broke in the middle of a front rotor swap.
These had the lifetime hand tool warranty so I figured it was time to try out how HF would handle it.
I take the wrench to my local HF and tell the cashier that the ratchet doesn't work any more and I want to exchange it. She told me to go get one off the shelf. Since they are sold as a kit they had to open a new key, take out the 15mm and gave it to me. Manager came up and signed the return and I was done with a new wrench in less than 15 minutes.
Pretty cool. The hardest part of the whole process was trying to open the package to get the wrench out.
HF's lifetime hand tool warranty is a great bonus to the hand tools they sell.