2) Survey Income System - Try It To Believe. [ earn 75.0 % ]
Highest Conversions, Detailed Referral & Conversion Stats, Low Refunds. We are the Best. See http: /aff.SurveyIncomeSystem.com.
PAYOUT STATS: $earned/sale: $ 21.3 , %earned/sale: 75.0 %, %referred: 93.0 %, gravity: 401.05
我们可以从PAYOUT STATS: $earned/sale: $ 28.16 , %earned/sale: 71.0 %, %referred: 75.0 %, gravity: 366.12
$earned/sale表明产品实际利润是$ 21.3
%earned/sale表明产品利润率是75.0 %
%referred表明产品93.0 %是来自affiliate销售
gravity: 401.05 表明产品卖得好
更具体参考
http://www.clickbank.com/ranking.html
还有个隐藏的因素，refund rate，需要我们自己去发现
Survey Income System卖价$34.95，扣除CB手续费7.5%+$1，
名义利润=[34.95*(1-0.075)-1]*0.75=23.5
refund rate=(名义利润-实际利润)/名义利润*100%=
(23.5-21.3)/23.5*100%=9.36%
9.36%就是Survey Income System的refund rate(退款率)，很正常
一般来说CB产品10%的refund rate是正常的，5%则是非常好的产品了。
推广产品前，最好自己去测试吧
这里给出个工具，能快速计算出产品名义利润
http://www.cbengine.com/tools/index.cfm?tool=calc
