Flounder Ltd. purchases units of wood frames that have manufacturer's volume rebates from Novak Inc. The rebate requires Flounder to purchase a minimum number of units in a calendar year. The initial unit cost of each wood frame is $3.00 before any rebate. If more than 4,140 units are purchased, the rebate is $0.50 per unit for all units purchased beyond the base amount of 4,140 units. Flounder has a June 30 fiscal year end. By June 30, 2023, Flounder had purchased 2,850 wood frames for the six-month period from January 1, 2023, to June 30, 2023. Flounder estimates that an additional 2,850 wood frames will be purchased from July 1, 2023, to December 31, 2023. Flounder's management is very confident that this estimate will be confirmed by future purchases from Novak. (b) Calculate the amount of any rebate that Flounder should accrue at June 30, 2023, assuming the rebate cannot be cancelled by Novak. (Round answer to 2 decimal places, e.g. 52.75.) Accrued rebate receivable $