Sheridan Trading Company uses a periodic inventory system and has a beginning inventory as of April $1$ of $240$ tents. This consists of $240$ tents purchased in February at a cost of $$390$ each. During April, the company had the following purchases and sales of tents.

$\backslash$table$[[,$Purchases,,Sales$],[$Date$,$Units,Unit Cost,Units,Unit Price,$],[$April $3,,,168,$$$580,],[10,290,$$$430,,,],[17,,,340,580,],[24,390,450,,,],[30,,,290,580,]]$

$($a$1)$

Determine cost of goods available for sale and ending inventory in units.