Good question. They have a new Juki machine to sew these on directly, but I can't tell whether it will be practical to sew on by hand. I expect most tailor and seamstress shops won't be taking our loans to buy machines just to sew these new zippers in one size.

I expect the same way you do now

Right now zippers have a piece of fabric. You can sew it with any machine or even by hand.

This new one requires a special machine to sew it.

I bet it could be done by hand by an experienced hand

and turn a 5 minute task into a half-hour one.

Which is fine?

it makes a difference if the repair costs $5 or $25 and if it can be done on the spot, or if i have to wait until tomorrow.

$25 to repair a zipper in 1 day is pretty great, I would.be very happy with that