Comment by dredmorbius

Update: Levi Strauss apparently does still offer bespoke jeans, under the "Lot No. 1" label. Pricing begins around $USD500, and the option is offered only in SF, NY, and London.

There is also a "Levi's Taylor Shop" option at somewhat more locations: <https://www.levi.com/US/en_US/features/tailor-shop>.