Target is sometimes pre-emptive on their price drops... they dropped all versions of MK: Deception to 19.99, then about a month later all other retailers followed suit.
I wouldn't be surprised if, in a few weeks, TS: FP is 19.99 everywhere. I mean, this isn't a clearance price by Target, and I'd be very surprised if they decided to just eat the profit loss on the title, unless they were getting reimbursed by the distrubutor, and the only way they'd do that would be if it was an official price drop.