Check Steam, DCS MIG 21 Bis on Sale and other MODS get it while its hot! 
Thanks for the heads up Osprey 
though I wished they did 70% off instead of 40%. ATM I own the Mustang, Dora, Sabre (me likes) and the Warthog (over 600 pages manual), so plenty to fly for now. I wish they can offer me now spare time :rolleyes:
Next week 3th of december (+ two weeks) they will release the Kurfürst 109 on beta and more news about the new EDGE maps.
+1! A-10, FC3, Mustang, Sabre here, only thing missing is time to fly (and some minor tweaks in the HOTAS program). :rolleyes: