It truly is a crapshoot in PA. My dad resides in the northeast/mid central part of the state, and has shopped at various stores (the 'specialty' stores). But, he has to travel since the closest one is almost an hour drive.
His experience is well over 70% to get a properly handled bottle, but he has had plenty of crappy bottles to make him just want to quit. His favorite example was a couple of years ago the system had '95 Chartogne-Taillet champagne for an extremely reasonable price. He purchased a few bottles in the store he visited, tasted one to find it to be yummy, and went back to see if they had more hidden in the back. No go. But, the "wine specialist" (he says with a smirk on his face), offered to call around to find more. He located a case at 'x' and requested it be sent to the store.
A week or so later, my dad gets the call it has arrived so he drives to the store (remember, no close-by 'specialty' store) buys it and goes home. About a week later, he opens one of the bottles from the case, and is immediately disappointed - it is nowhere near the wine he had purchased previously. And, all the bottles from this case were similar... drinkable, but nothing like the first bottle or three he got originally. (I think at the time, he didn't know the return policy - besides, with a reasonable lengthy drive, isn't like you take one bottle back each time you have a poor one).
But, on the other hand, we've enjoyed many bottles of bordeaux purchased through various 'specialty' stores in the early to mid 90s. And, we've had plenty other Thiese-imported grower champagnes that have been just wonderful.
(note, most of his purchases are from out-of-state. Still visits the state stores for the curiosity and the 'hunt')