No, that didn't include labor... I lucked-in to getting the install done for a feature article in MM&FF (coming up in August issue). That said, I can't imagine that it costs terribly much, as it goes so quickly.
That was why I was so "general" with my $$ figure. In fairness to Justin, don't take it too literally, but you should just give him a buzz and find out what the deal is.
I don't know what you'd "do" with a "bigger one" quite honestly... I'm mounting some new hopefully-stickier Michelin PS2's later this week that will hopefully bring some sort of traction back into the picture. On my worn F1 Goodyears, I can absolutely ROAST the rear tires in 3rd gear just by giving the throttle a stab. It only hooks on good hot sun-soaked pavement. Hit a shadow, or play around at night, and only 4th gear will hold, and even it is a bit sketchy... I'm tellin' ya, at this 660 rwhp range, unless you run a purposeful drag tire, you're right at the limit of street-function. Where can you go to run from a flippin' 80mph roll?