If you’re looking for a 2013 Camaro ZL1 Convertible, it will be 4x harder to get than a coupe through the end of the year. With ZL1 coupe allocation at about 4000 units through the end of the year, convertibles will be FAR LESS, at about 1200 units.
With units being so thin, be prepared to see even larger dealer gouging / mark ups. My advice, KEEP SHOPPING. Large volume dealers will be your best bet, an those in the central USA. Those have historically been better for MSRP deals. GOOD LUCK !