Cross Collectibles currently fills mail orders from all over the U.S. and receipts come in to headquarters in Little Rock, Arkansas. The firm's average accounts receivable (A/R) is $2.5 million and is financed by an 11 percent annual, simple interest bank loan. Cross is considering a regional lockbox system to speed up collections which it believes will reduce A/R by 20 percent. The annual cost of the system is $15,000. What is the estimated net annual savings to the firm from implementing the lockbox system