I have no experience with this type of rug but I had a similar experience buying some hand made silk rugs in India but a lot more haggling.

People online argued over if I paid too much but at the end of the day it was a fair price in my opinion and I've had them for over 15 years. They've held up better than any other rug I've owned and have been totally worth it.

Here is one of the carpets.

Check out /r/rawdenim pretty much any of the brands covered there.

Okayamadenim.com sells most of the brands and ships internationally from Japan. Be prepared for sticker shock though, that shits not cheap.

For more entry Naked and Famous Denim has some cheaper prices but still high quality and you can usually find something on sale.

It sounds like some chambray shirts are what you're looking for though.