First Choice website has other Weihenstephaner beers, but not the Original Helles - guessing that it's on clearance. For reference, the other beers were $7 each.
If you're looking for them in-store, it's the one with the blue cap, and they were in the walk-in fridge.
Edit: I don't think that this is a store specific deal, there was no signage or indication on the shelf of the special price. Register gave the $2 price when scanned in.
Description from Beer Cartel:
Country: Germany
Brewery: Weihenstephan
Style: Lager
Format: 500ml Bottle
ABV: 5.1%A good beer takes its time. The long storage makes our yellow bright lager, "Original", a flavourful beer enjoyed with fine pored, white foam. With a mild hoppy note and its pleasant fresh spicy taste, it goes very well with salads, poultry, stews or with a hearty snack. Brewed according to our centuries-old brewing tradition on the Weihenstephan hill.
Amazing beer start with vomit flavour but after the second sip gets amazing.