Ziad Company had a beginning inventory on January 1 of 150 units of Product 4 18 15 at a cost of $20 per unit. During the year, the following purchases were made.

Mar. 15 400 units at $23 Sept. 4 350 units at $26
July 20 250 units at $24 Dec. 2 100 units at $29

1,000 units were sold. Ziad Company uses a periodic inventory system.

Determine the cost of goods available for sale.