Now, it wouldn't be a surprise to see this at a specialty store or a collector's store, but in a typical retail store like Wal-Mart, Target, Toys R Us, etc., I would never expect this.
I was at a Wal-Mart today, browsing the pegs, and ran across some different, but familiar cards hanging on the pegs. I looked at them and then flipped them over to check the copyright dates. I picked up a couple Purple Passions that I didn't have. One copyright 2002 and the other 2003, making them 2003 and 2004 models respectively.
I actually saw one with a 1998 date, making it a 1999 model. The thing is 13 years old and hanging on the pegs at a Wal-Mart! Someone must have shoved some cases back in a dark corner and forgotten about them for a few years or something.