In need of some sturdy crotch repairs for my Iron Hearts, I went to Studio Kim with 2 pairs of jeans and some 25oz denim off cut from the originally hemming.
The work has not disappointed. Studio Kim completely reinforced the crotch with the denim I provided and I'm pretty sure the repairs will outlast the jeans.
Yes, the repairs are expensive at $40/pair, but when you've spent $400+ on a pair of jeans, another 10% to make them indestructible is worth it.