No one has been quoted or charged more than $2k. I can't imagine a single owner being quoted that for the service itself. I'm not sure how you came up with the $3k figure as mentioned in another thread. It should be around $1500, give or take a couple hundred.
From what I've read on here and heard in general, the 15k service is almost pointless since these Panigale motors tend to stay within spec if it hasn't been ridden hard for most of its life and since yours is out of warranty, I'd just do an oil change, replace whatever else you may need to n call it a day.