With completely wireless earbuds, the rule is: when the battery fails, they have to be disposed of. Not so with the Fairbuds, that allow you to replace batteries in just a few seconds. Combined with a repairable design, the earbuds should therefore have an extremely long lifetime.
That’s the point. If you have devices where parts can be replaced easily and, ideally, inexpensively, I’m happy to spend a little more money.And support the project.