I don't need trading PBMining. I know that 5 years the daily divident will be without charges, according to the "difficulty", as is today at 0.00002684 BTC/GH/s/day, according to
https://bitcoinwisdom.com/bitcoin/difficulty.
With PETA I know today dividents are 0.00002107, tomorrow may be 0.00001467, may be X or Y, with incredible misterious charges (salary, hosting, ..).
Then you have to compare PETA with similar offers like CEX.io and Cryptsy Mining Contracts, you will see PETA is trading much lower than the former two.
I am doing that each day

cex.io last 24h: price of 1 GH/s: 0.0038, volume: 220000 GH/s, divident: 0.00002684 (0.71%/today)
PETA last 24h: price of 1 GH/s: 0.002544, volume: 25000 GH/s, divident: 0.00001467 (0.58%/today)
... and I know that the daily divident will be forever according to the "difficulty", as is today at 0.00002684 BTC/GH/s/day, according to
https://bitcoinwisdom.com/bitcoin/difficulty.
With PETA I know some day dividents are 0.00002107, another 0.00001467, or X or Y, with incredible misterious charges (salary, hosting, ..).