During the month of June, Ace incorporated purchased goods from two suppliers. The sequence of events was as follows: June 3 Purchased qoods for $4,000 from Dianond incorporated with terns 3/12,5/45. Juno 5 Returned goods costing $950 to Diamond Incorporated for credit on account. June 6 Purchased goods from Club Corporation for $900 with terms 2.5/12,n/45. June 11 pald the bolance owed to Dianond Incorporated. June 22 Paid club Corporation in full. Required: Assume that Ace uses a perpetual inventory system and that the company had no inventory on hand at the beginning of the month. Calculate the cost of inventory as of June 30 . (Do not round intermediate calculations. Round your answer to 2 decimal places.)