Flashbinder Guitars, Inc. is negotiating with the bank for a lockbox system that is expected to reduce check collection time by 4 days. Flashbinder Guitars' average check size is $1,200 and any funds freed up by the new system will be invested in a moneymarket account that is currently paying 2.5% annually. What is the most Flashbinder Guitars should be willing to pay the bank for the lockbox service, assuming the bank charges a percheck processing fee?