RIPE, revenue 38M EUR (40M USD), members 20k = 2 k/member
ARIN, revenue 25M USD, members 25k = 1 k/member
APNIC, revenue 33M AUD (21M USD), members 10k = 2 k/member
LACNIC, revenue 10M USD, members 12k = 0.8 k/member
AFRINIC, revenue 6M USD, members 2k = 3 k/member