Not sure what kind of volume you were doing to get that chargeback rate. I was doing 500 sales a day, approximately $250k a month in volume when I was running, my dispute rate was high but chargebacks lost were minimal. Despite that, Paypal were aware of my dispute rate when they negotiated the terms of our agreement ($5000 set reserve + 10% rolling reserve) - they then woke up one day and closed my account without letting my appeal or negotiate or provide any information. I just get the run around...