I checked two of my local stores that had it listed in stock that finally dropped to $5 a bag. Neither store had any to be found.
How many did BS show in stock and does it still show as in stock ? Did you look all over the store for it ? I found some on a random end cap well away from the seasonal/clearance area.
One store had 28, the other 23. I searched every isle in both stores for about an hour each. No one could locate them in the back either. Apparently I wasn't the only person who asked about them. Brickseek is still showing them in stock.
When the Fenton store (StL) showed a price of $9.98, a manager told me that every bag they had was in the stockroom, and not discounted... in fact, their inventory system showed they were discontinued. She said that meant that they would be sending them back to the manufacturer.
Two weeks later, Brickseek showed them at $5.98, with 33 in stock. I called, and the employees could not locate them. A week after that, Brickseek went from showing 33 in stock to 0.
The StL/Chesterfield store showed 29 bags at $5.98 last week. I couldn't locate them, and had an employee check the stockroom... all of their bags were on a pallet to be sent back. He brought me six bags out. I'm guessing that they must have put the remaining stock back out on the floor, because Brickseek is now showing 17 in stock.