I'm not a fan of the X-bolt - a lot of people have complaints about the springs and such rusting in wet cliamtes. For the most part I've always preferred Ruger for the value and reliability, Reminton for the looks (BDL and CDL only) and Savage for out-of-the-box accuracy.
The .300 WSM is a good cartridge but it really doesnt do anything the .300 WM Mag can't do except fit in a short action. Don't know if the price is good or not, but then except for the custom rifle I'm building I've never spent more than $500 for a rifle - new or used. If you like the rifle and want it, the price/value determination is yours alone.
If you do not handload you might want to take a hard look at ammo prices. In spite of all the hoopla about the WSM, it is the ballistic twin of the .300 Win Mag. I'd have to check, but I'd bet Win Mag ammo (and rifles for sure) can be had for a lot less. It sucks to have a rifle you cna't afford to shoot.