Haven't seen any US pricing, but here is how it stacks up in Canada:
$70,200 Base Boxster S - source Porsche Canada
$81,900 RS 60 Edition - source:
Canadian Driver
$11,700 Premium
Definately worth it if you look at individual prices in CAD:
$5,050 for Carrera Red leather
$2,720 for the 19" rim upgrade
$2,790 for PASM
$2,940 for the Sport Exhaust
$4,390 for GT Silver metallic "Special Color"
$17,890
Some of those option prices are insane though. How is GT silver worth $3,400 more than Arctic Silver ??