I bought an MXR Guitar Lead online back in January, which started generating some pretty awful interference, like a sharp buzzing, not your typical 50 cycle hum. It was intermittent but stopped when I put my hand on my amp, suggesting an earth problem. Replacing the lead eliminated the problem completely.
These leads advertised a limited lifetime warranty, so I decided to try my luck.
So after digging back through my E-bay History I found the seller's contact details and fired off an e-mail.
To my great surprise I received an e-mail almost immediately (on a weekend) saying that a replacement lead will be sent to me first thing Monday, and that there was no need to send the old lead back, I could keep it as a spare if I wished. (obviously it would require repairs, but that's doable.... probably).
I have to say that this is great Service and highly recommend Stagefront Music. (when the replacement arrives)