The EZ LOC (current) rudder system is by far the least expensive replacement option and the dealer is correct... just over $1,061 (USA / USD / 5-2013) plus possible freight. Aluminum castings and rudders are far more expensive.

1 39524001 TILLER XBAR WAVE "EZ LOC"
2 39312000 WAVE EZ LOC RUDDER ASSY
2 90880211 PINTLE UPR - EZ LOC
2 90880221 PINTLE LWR - EZ LOC
12 8030411 SCREW 12-24X3/4 LONG LOCK PHMS