A company uses a perpetual inventory system and has the following transactions.

April 1	Beginning inventory was $10,000
April 2	Purchased $4,000 of merchandise from Lyon Company on credit, invoice dated April 2, and FOB shipping point.
April 3	Paid $150 cash for shipping charges on the April 2 purchase.
April 4	Returned to Lyon Company unacceptable merchandise that had an invoice price of $600.
April 17	Sent a check to Lyon Company for the April 2 purchase, net of the returned merchandise.
April 18	Purchased $7,500 of merchandise from Frist Corporation on credit, invoice dated April 18, and FOB destination (received on 4/20).
April 21	After negotiations over scuffed merchandise, received from Frist a $500 allowance toward the $7,500 owed on the April 18 purchase.
April 28	Sent check to Frist paying for the April 18 purchase, net of the discount.

Required: What is the ending inventory balance?