I'm selling mine for $1225 NIB, shipped. I only found once source who sells the 24" barrel version of the Tactical and they sell it for $1500. You see a couple of the 20" versions going for around $1300. I have not seen any used Tactical models hitting the market so maybe subscribe to as many gun forums you can and post a WTB ad for a Tikka T3 Tactical.
I haven't shot mine but from my research on another forum, sniperhide.com, people rave about Tikka rifle and the T3 Tactical has some great reviews from folks who own them. You can do a search on there without being a member.
I just didn't find any convenient places to do long range shooting where I live hence why I'm selling it.