Er, yeah, 1900$USD for a bike with full 105 is a ripoff, plain and simple. You should be able to get full Ultegra at the very least for that price, likely with some really nice wheels and a great saddle. I'd check another LBS, this is a good time to be buying from the LBSs because they are getting rid of their 2006 stock.

Or you could do what many of us here at BF have done and find a great deal on the internet, but that is another thread entirely