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PBMining's whole schtick was that you would get 100% PPS equivalent for your hashrate, no fees or costs. Network luck should have no bearing on it.
For a real miner, this is impossible. If they satisfy this demand of yours, u can be 110% sure that they are Ponzi.
Do you see now why people think pbmining is a ponzi?
I see you're advertising cloudmining.website which also has zero fees/variance.