A company has two products: A and B$.$ It uses activity$-$based costing and has prepared the following analysis showing budgeted cost and activity for each of its three activities:

$\backslash$table$[[,,,$Budgeted Activity$],[$Activity$,$Budgeted Cost,Activity Cost Driver,Product A$,$Product B$],[$Activity $1,$$$103,000,$Square feet,$4,600,4,400],[$Activity $2,$$$78,000,$Units produced,$6,100,7,100],[$Activity $3,$$$125,000,$Setups,$4,100,6,850]]$

Annual production and sales level of Product A is $35,900$ units, and the annual production and sales level of Product B is $71,150$ units. What is the approximate overhead cost per unit of Product A under activity$-$based costing?