Sure, In the Bay Area you can get aged basmati at Vik's Market in Berkeley and various markets in Union City. I would guess any place with an Afghanistan-born enclave would have it somewhere.
In the Bay area the largest concentration of Afghans is in Fremont, there's at least two specialty grocery stores that stock much the same as what you'd see in Kabul.
https://www.google.com/search?client=firefox-b-d&q=afghans+f...