In 4 years of doing comps and only cooking Waygu I can tell you this will not be an easy find if at all..nobody regularly stocks Waygu brisket and if they do if will only be one or two..not many people outside of BBQ cook Waygu briskets for their own consumption..I've seen SRF at whole foods but the price was crazy high your best bet would be a resturant supplier that could order for you.
Totally agree. I ordered two briskets about 6 weeks ago and when they didn't arrive on the agreed upon day, BPS shipped them overnight at no additional cost. Then about a week later I got a surprise package from them with two bottles of rub and a couple of koozies. Under promise, over deliver.
Totally different than my experience with another wagyu supplier, Morgan Ranch, which was the worst customer service experience I've ever had buying anything from anybody. PM me and I'll share some emails that will leave you shaking your head.