The game is hard to run on a GTX Titan at constant 60fps. The titan runs for about $900-$1,000 any build that is prebuilt along with most likely a costly shipping (I'm ignorant when it comes to shipping to other countries I live in US never paid more than $12 for it) and has either a titan or something close it most likely gonna cost you more than 2k.
The only reasonable solution IMO is if you want it that bad just order the parts and built the pc yourself. It isnt hard at all I have built 2 so far and barely started learning about pc hardware for about a month and a half.
And honestly I dont think that you can find a pc with prebuilt Titan though I've never tried looking