Cashing in on a 15-minute fame window usually involves a time-honored formula: reality TV paycheck plus appearance fees plus book advance, minus the legal expenses from that DUI-slash-sexual-harassment fiasco-slash-tax-evasion-misunderstanding. The resulting pimp wad is usually just enough to buy one or two pieces of the reality-star dream — his and hers jet skis, for example.

But that was before “Jersey Shore.” Forget the his and hers jet skis. Think his and hers jacuzzis — maybe even custom-built in a luxury condo in Hoboken. Snooki, J-Woww and the Situation have essentially founded a mini-empire since their show took off, launching thousands of dollars in guido-flavored enterprise. Snooki is hawking self-tanner, J-Woww has a fashion line called Filthy Couture, and the Situation has a music single, among other things.

As for poor Pauly D, he’s had little more than his ones and twos — until now. The Ministry recently got a missive from Cafe Press, indicating that an official Pauly D merch store has opened.