Brand new R1k +, if someone needs it desperately I reckon you could be mean and get at least R600.00 wich was the cost price a few months ago. +1 for storage I need some but I can wait.
What I experience and practice wrt hardware is that once they're 2nd hand, buy and sell them for 40% less then what they were new. Age and warranty also comes into play.
You'll not really get a true reflection of 2nd hand goods on MyBB's Classifieds IMO if you're looking to buy.
Seller's here are always coming along with hefty price tags - from what I've bothered looking at.
Sellers on carbonite forums are always more realistic, in my experience.
Though there's always room for negotiations in private and what not.