Beer prices

I know that the price of hops and various other factors have pushed beer prices up, and have even almost gotten used to seeing $12.99 sixpacks on occasion. But last night I got a rude awakening: at a party store (that's what they call liquor stores in MI, though I have no clue why) in Ypsilanti last night, I wanted to buy some Rogue Dead Guy Ale for Halloween. Imagine my shock when I saw the price tag: $16.99 for a six pack!?! I checked the other Rogue beers they had and none of the others were quite that much, though a couple were $14.99. Is this normal? Has anyone else noticed similar prices? Are we on our way to $20 sixers??