I've been looking for some good, cheap arcade racers on PC and briefly looked at the Flatout games (obviously not 3 since that seems horrible) after learning about this series a week or two ago but didn't pull the trigger until an half hour ago with GMG having them on sale with one and two at $2 each and Ultimate Carnage for $4 from their summer sale, less with 20% off code.
Annnd I didn't realize UC was an enhanced version of Flatout 2. >_< Only $1.60 but, bah.