All time low for the 2 player Unmatched game according to camelx3, price matching Gameology which have a few versions on special.
BGG 8.2 with complexity 2.3/5
Another notable version is Redemtion Row for $43.95 (also matching Gameology) which is 3 player with a 3-4 player map though this is not an all time low if the bargain hunter in you is put off by that.
BGG 8.2 complexity 2.00/5
The games are designed to be interchangeable with the characters and maps though do not all cater to the same amount of players on the maps.
Great series of games