i would give it like 1300 or maybe a bit more, and it is about double of what it used to cost unless you find a dealer and they can charge you whatever they feel like.
i am giving my re sx 18 1000wrms from a jl audio 1000/1. i am sure the jl amp gives it the full 1000wrms or more. anyways the sub don't break a sweat with the 1000wrms. it is asking for more.