Chickory Stout IM CONFUSED!!

Hi I'm new to the forum, not new to Dogfish. Chickory Stout was the first dogfish beer I tasted in 1995. Not sure the price but it was sold in a six pack. All these years up until today I have got it in a six pack for 9.99. Today my local liquor store had it in a four pack. The store clerk looked at me like I was crazy when I asked for it in a six pack, even though the sticker on the door saiid 6-pack 9.99. So I ask, ok how much for the 4 pack. He says, looking at the sticker 9.99. AM I MISSING SOMETHING HERE? I kinda felt like Habib was trying to squeeze a few extra bucks out of me. So is a four pack all I can get now? What's the story?

Thanks

Duane