If I were doing a high number of transactions and relying on Stripe to provide all my CC processing, I would gladly pay an extra $25-50 a month to have priority support in instances where there may be fraud. Shoot, even at a couple hundred in transactions each month I would gladly pay for priority support. I would rather have a $25 expense each month than risk business loss due to real or suspected fraud. Shoot at some level I might even consider an extra nickel per charge to have a dedicated account manager who was always there for me and knew my business inside and out.