Futaba actually pays you $3 to take their 4YF sport radio:

$109.99 - Flight pack with R168DF, 4 S3004 servos, 600Mah 4.8v NiCd, switch harness, and servo extension
$12.99 - Futaba receiver crystal for flight pack
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$122.98

$119.99 - Futaba 4YF Sport radio with AC charger, 9.6v 600mah TX battery, plus flight pack and receiver crystal

The only thing I can figure is that Futaba realizes every transmitter that they can ship out the door will eventually end up somewhere and get used. Even if we're all buying radios we don't need to save three dollars, it will strenthen Futaba's brand penetration.

I recently bought the Futaba 7CHP radio system so I could use the flight pack and then E-Bay the transmitter. I paid $249.99 after $30 discount for the radio system and resold the 7CHP transmitter with box, instructions, TX battery, AC charger, neck strap, and freq flag set for $136.02.

I kept the R138DP PCM receiver, receiver crystal, 4 S3151 digital sport servos, the 1000mah 4.8v receiver battery, switch harness, and 6" servo extension. Priced seperately, these components are normally $254.96 minus discount. My net cost after reselling the transmitter was $113.97.