I buy them used for $200-$250 a set. I have Mules, Rebel Yells(a favorite), Stormy Mondays, hum sized P90s called Nantuckets (very nice in a PRS SE Zack Meyers), and a P90 set called Supermassives (great PuP, vintage with volume rolled back and modern at full)
Shop around on some forums not to be named here. I've done alright with my purchases. I watch for active listing that have ben around for a little bit and offer what I stated above, based on condition, lead length, etc.
Good luck
The "Zack Meyers"
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