$9.99, qualifies for free super saver shipping.
EDIT: Note, Amazon is out of stock but you can still order it. Just select it from the alternate buying choices to the right.
EDIT 11/30/13: Deal appears to be over.
In a two-pack with Gunstar Super Heroes, $19.99 for both. (At the Gateway store in Portland.) Decent if you're into SRPGs, or were a fan of X-COM back in the day. It's somewhat hard to find, but doesn't usually go for much more than $10 anyway.
Just checked a couple of Portland-area Freddy's and saw a bunch of GBA clearance games have just been marked down from $14.99 to 9.99. Here's what I saw on the shelves:
Gunstar Super Heroes
Robots
Van Helsing
Veggie Tales: LarryBoy and the Bad Apple
Winnie the Pooh's Rumbly Tumbly Adventure...