I have a set of 8 foot S809 fiberglass blades that have been laying around my shop for three years. These are NOT the cheap WindMax blades that fall apart. They are the high buck, high quality PowerMax+/Talon turbine blades. They measure slightly over 46" long and are about 8 foot diameter on a hub. I put aluminum tape on the leading edges when they were new so there's zero leading edge wear. They need to be cleaned up and polished out but otherwise they're ready to bolt on your turbine.
When I ran these blades they regularly put out 1 kW on a 12 volt machine in good wind. They like to run fast - TSR 7 or better, or 700 rpm @ 28 mph.
I want $75 for the set. They were over $200 new.
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Chris