I've pondered the time capsule store idea before, too.
More specifically, I've pondered two liquor stores in the old part of downtown that have been boarded up, as nearly as I can tell, for 20 years or more. And yes, I've looked for clues.
I do wonder if the inventory is still there, especially since a local store I (sort of) frequent that recently moved left a bunch of inventory in the old locale, apparently (according to the manager) stock that didn't sell well. He says they don't know if they'll move it...makes me feel like there has to be a store somewhere that just got boarded and left, full of sweet nectar.
Oh, and the Twilight Zone rules.