I do not know if you are a JR or Futaba person, but I have the JR Sport Retract servo ordered right now for $25.00. The plugs are universal and the Sport line is actually very close, if not identical to there twice as expensive regular servo's rebadged with the Sport logo. I have been useing there ST47B's and really like them. I clipped this from there add.

RT88 Retract (1.15 oz, 88 oz/in Torque)


Specs

Type: Retract
Torque: 88 oz/in @ 4.8V
Speed: 1.12/160 @ 4.8v, .90/160 @ 6v
Dimensions: 1.74 x .92 x .88 in
Weight: 1.15 oz
Application: Retractable Landing Gear