I was just at my Costco (North San Jose) and found a 3-pack of these Iris 12"x12" project cases for $14.99. I didn't have any storage containers for my 12" x 12" paper, so I'm happy to find these.
I noticed my Costco increased the price of the Crop-A-Dile (with eyelets) from a clearance prices of $23.99 to $39.99...months ago when I first noticed the product it was $38.99. I've seen them lower prices, but I've never seen such a dramatic increase. Costco.com still has it for $23.49.