There's a few rebates involved.
Purchase Microsoft Flight Simulator 2002 at Amazon for $14.99, with a $20 rebate.
http://www.freeafterrebate.info/forms/FlightSim2002.pdf
Also, at Amazon, pick up Microsoft Flight Simulator 2004 for $26.99, and a $20 rebate available here.
http://www.amazon.com/exec/obidos/ASIN/B000096L71
There's also a $10 upgrader's rebate here.
http://download.microsoft.com/download/c/c/5/cc597949-3f97-4b46-9e73-f4886538a0ff/Flight%20Simulator%202004%20Rebate.pdf
So after 3 rebates, you make $8!
Purchase Microsoft Flight Simulator 2002 at Amazon for $14.99, with a $20 rebate.
http://www.freeafterrebate.info/forms/FlightSim2002.pdf
Also, at Amazon, pick up Microsoft Flight Simulator 2004 for $26.99, and a $20 rebate available here.
http://www.amazon.com/exec/obidos/ASIN/B000096L71
There's also a $10 upgrader's rebate here.
http://download.microsoft.com/download/c/c/5/cc597949-3f97-4b46-9e73-f4886538a0ff/Flight%20Simulator%202004%20Rebate.pdf
So after 3 rebates, you make $8!