In the marketing world, there's the buy one get one free kind of thing. I think they should do that to crutches because crutches users use one pair of crutches till they break because sometimes they may not be at a position to buy 2 pairs of crutches for themselves to alternate as they wish. So yes, make it, buy one get one free.
Am in the group of use them till they break. Though sometimes when they start producing crichy sound, I have to replace some things.
The pads have to replaced regularly though
This is very interesting, is there?