The best reason to go here? The prices. Ermahgerd.
Second best reason? Wider selection than any ABC store in Mecklenburg county.
Okay, the selection is not incredible and there could certainly stand to be some food pairings (cheese, crackers, meats, etc.). This was especially evident when comparing to my favorite BevMos in SoCal and Spec's down in Houston. BUT, Frugal MacDoogal's still has a good selection of liquor - of special note were the cordials and (what else?) the bourbons.
The wine section was good, not great. Would still prefer to get quality wines for less money at Trader Joe's. They also had a cigar section that had an OKAY variety of cigars. Beer selection looked good, but there are plenty of places in Charlotte to get good beer.
In the end, it's really in the liquor department that this place shines.