Glitter Enterprises started the period with $70$ units in beginning inventory that cost $$2\mathrm{.}30$ each. During the period, the company purchased inventory items as follows. Glitter sold $260$ units after purchase $3$ for $$10\mathrm{.}60$ each.

$\backslash$table$[[$Purchase$,$Number of Items,Cost$],[1,240,$$$2\mathrm{.}80$