I understand. But we used to fix the disputes. Some people just change mind immediately after they purchase thats why they file disuputes.
Paypal also holds 2000gbp worth of funds (they named it on-hold funds). Those funds are designed to be a protection so if any issues happen, 2000gbp will be there to solve it up. We usually get 400-800gbp worth of orders a day. disputes of just below 50gbp a day