Microsoft Corporation makes Xbox video game consoles. For Microsoft's financial year YYYY, please make use of the following provided information regarding the inventory of those Xbox consoles: Beginning Inventory: $850,000 Cost of Goods Sold: $400,000 Ending Inventory: $600,000 What are the dollar amounts, respectively, for the Purchases and Cost of Goods Available for Sale (all pertaining to Xbox console inventory) in Microsoft's financial year YYYY