I use buildyourownjeans.com for this. They are somewhat spammy, quality control is dodgy (I've gotten a zipper when I ordered buttons), the website is a joke,

I use buildyourownjeans.com for this. They are somewhat spammy, quality control is dodgy (I've gotten a zipper when I ordered buttons), the website is a joke, but... The price is right ~$75 They offer things I cant easily get elsewhere that matter to me, 14oz fabric, raw denim, and customized cut