I thought I would share this with everyone. Andymark is slowly coming out with new products that are designed for ftc. Pretty nice to see this happening. (Some of the below is new today, and others have been released over past few months)
Pricing seems pretty fair, completing with Vex-Pro on pricing, if you don't care for the large bearing holes.
Sprocket Line. (Ninja Star Line.) FTC and 6 Bolt Hole Patterns.
16
http://www.andymark.com/product-p/am-3282.htm
24
http://www.andymark.com/product-p/am-3283.htm
32
http://www.andymark.com/product-p/am-3284.htm
40
http://www.andymark.com/product-p/am-3285.htm
48
http://www.andymark.com/product-p/am-3286.htm
D Shafts
6mm
http://www.andymark.com/product-p/am-3226-100.htm
Rev-Robotics (15mm line) (Yes, not Andymark, but sold by Andymark)
http://www.andymark.com/REVRobotics-s/534.htm
NeveRest Series. (20s, 40s, 60s)
http://www.andymark.com/NeveRest-s/550.htm