I don’t believe their blanks are Prime. They do sell a ton of Prime blanks, but these are a different thing all together. Like another poster mentioned, they are a little hard to find on the site - they are not under the “SoCal” branded decks, gotta go to the “price point” section or something like that. Once you find them there are pages and pages of options though. $35 or less.
This particular one is the “X9” I believe, there are a few different letters but it is unclear as to what each one means. Overall pretty mellow, the kicks are slightly steeper than a Girl G033 but not as steep as an old AH I had laying around.