The Wiggins Bicycle Shop has decided to offer credit to its customers during the spring selling season. Sales are expected to be 400 bicycles. The average cost to the shop of a bicycle is £280. The owner knows that only 97 per cent of the customers will be able to make their payments. To identify the remaining 3 per cent, she is considering subscribing to a credit agency. The initial charge for this service is £500, with an additional charge of £4 per individual report. Should she subscribe to the agency?