I dare any cobbler to tell me its hard to replace a zipper now. In the midst of my desparate search for new tall boots (since I’m riding english for my new job) zipper #3 blew out in my tall boots and I needed them asap. I couldn’t find a cobbler I trusted so I decided to try doing it myself since I couldn’t make them any less wearable.
It was so easy, aside from finding a proper zipper. Taking the old zipper out was much harder than putting it in because I had to navigate all the old stitching they hadn’t bothered to remove and they had about a gallon of glue holding everything together, but after that, a few hand stitches through the heel counter (which cost me 5 needles) and I was able to do the rest with my tough as nails sewing maching. If I hadn’t done it myself I’d have a hard time telling which zipper was done by the cobler and which one was done by me, and it only cost me 5 bucks and a about 3 hours. I’ll have to wait to find out how durable my repair was, but at least it bought me time to order new boots (since the local tack shops didn’t have anything in my size).