Scrambling, Sandra has gone back to her original supplier of collars, which thankfully now has a large quantity it can ship to her. These collars cost $0.55 each, and the company can get enough of them to go back and fix the collars on the recently ruined batch, plus put some into the warehouse for a future batch. In order to fix the botched T-shirts, though, Flint-T will need to incur an extra $2 per shirt in labor costs to carefully remove the bad collars and re-attach the new ones. These reworked shirts should still be salable to retailers at the regular selling price. How much gross margin per unit will Flint-T generate if it fixes and sells these reworked shirts? (Round answer to 2 decimal places, e.g. 15.25.) Gross margin /unit