I purchased an $8 Groupon good for $16 for this Quiznos.  You'd think it should be pretty simple for someone of High School graduate age to ring up an order, subtract $16 and then give me the correct total, right?  WRONG!!!!!  They took off $7.36 pre-tax and then $8 post-tax.  The entire $16 should have been subtracted PRE-TAX like a coupon (in fact, like their combo discount).  But no!  Their method gyps the Groupon user out of an additional $1.34 on a $16 Groupon, on top of their outrageous prices because they're located in a strip casino food court.  STAY AWAY!!!!