A bit of a pipe dream at that price mate... but what switches are looking at?
I'm running the Cherry MX Reds on both a Corsair K95 Platinum at work, and the Claymore at home, and I must say the Claymore just feels and sounds so much more refined.
Spend the extra R1000 and buy new for the unboxing experience, and know that's your baby for the next 10 years!