I've always wondered about how much the quality of the manufacturing matters. I've had probably a dozen pairs of jeans in as many years, and on average they fail after wearing them for 100-200 days of light usage (e.g. office, not gardening). However, despite them not being particularly high quality manufacturing, the part that always fails is the fabric itself, not the seams/edges. Is that the expected lifetime of denim? Would jeans that are 2x the cost have denim that lasts 2x as long? Does the quality of craftsmanship matter if the fabric is what fails first?