theres some here now in the f/s section for $200 i think. But $250 for second hand 6cyl extractors i think is a bit steep unless it is some good condition pacies. Check ebay mate there always poping up on there.
im in sa , postage shouldnt be a problem tho... i done NEED pacemakers as im not supercharging or anything ... aslong as theyre good enough for what ive got i may be interested.
i can get a set made up here new for $300 tho so ill need too know the quality of them.