[shostack]

I used to do that as well when I owned a pair of cheaper Koss earbuds. It was ages ago so I might be recalling incorrectly, but didn't they charge a shipping and handling fee for all of that? If so, my hunch was they either came close to breaking even or even turned a small profit in some cases.

[reaperducer]

I've never been charged a thing, except my expense of sending them the headphones. I don't get an RMA or anything. I just put the 'phones in a box with a nice letter explaining that they're under a lifetime warranty and I'd like to have them fixed.