Pack odds

I would like to know where if anywhere we can get a better idea of pack probabilities.  I do not think that enough information is being given on how pack odds are being used against us. With the price we are expected to pay for certain items I do not think we are given a proper breakdown of the odds or probabilities.  I would also like to know how they are verifying that the results are actually random. I myself based of off statistics I have been keeping for the last two seasons am finding it hard to believe they are actually random. It would take too much bad luck to be this consistently low across the board in my findings. In not one circumstance have I met or been above the stated probabilities. Not in a single pack category in a period totaling over 30 days have I been on the positive side of any probabilities. I believe I have lost hundreds of dollars because of this and many hours of wasted time.