I was taking a stroll in manhattan and dropped by 2 stores and found that they carried sandblasted manzanitas!
The 2 locations I found are:
62 Reade St.
New York, NY 10007
Dry Nature Design
245 West 29 St.
New York, NY 10001
Langdon doesn't have any pictures on their site so you will just need to drop by to see what they offer. Dry Nature has pictures of on their site, but the store has a much bigger selection. I think it's a bit pricier than ordering them from S&S, but it's worth a look if you don't want to pay shipping.
Does anybody know where else I can look for some?