i just saw it too and was thinking man i know i dont go on the forum very often but thought i would have seen this! i have to agree way too expense, hell i was on the fence shelling out 500 for the one from EC but did.

as for the rpm problem i do not know however i do know there were concerns about the longterm durability of something smaller than the 65mm. i believe several people have had there pulleys milled down below 65mm to low 60's