I'm not sure, because for me, I usually base the price off of the amount of effort in gathering such amount. This leads to me being very biased, so if I give an answer, (a biased one), it'll have to be: 2,500r
I used to see it go for around 2500-3000r, but then the market was saturated-- So I have seen it go regularly for 1000r- 2500 at most now.