Yes, you can get these in US! You just have to pay more. Unless you are local to the region where these are grown in US, you will need to order from online sellers. I ordered mine from Earthy Delights. Since these are perishables, only overnight shipping is provided. Be smart and order more than a lb in order to make it a worthwhile deal. For the ones I ordered, I am yet to savor their taste… but I am quite sure they will be wonderful! Close examination did tell me that they are not same as what you may find in Himalayas. Mine had shoots chopped…
Update: they turned out to be pretty tasty. Here’s a picture of the cooked version Indian style