Need Help!: Bulk Servos? - Need 30 Futaba s3003's @ LOW cost
Tower Hobbies has them for $10.99 each when you buy three or more. Use coupon code #010V4 and save $15 on any order over $150.
Servo city has them for $10.99. They have Hitec HS-300 for $9.95.
Chief Aircraft has them for $11.95.
Gr8lakes RC has them cheap too (call them for pricing).
The HES-188P at Radical RC is just like a S3003. $8.50 each, qty 4.
I have seen really cheap clones for as low as $8, but I suggest you splurge and buy the real deal for a couple dollars more. Please be aware that R/C connectors and servo wheel splines (and the wheel screws) will differ on the various servo brands.