$2K is a bit high but compared to how much AR's have jumped since the start of this insanity it is NOTHING. Buy it buy it buy it...why are you still reading this and not buying it?
The SIG-551 series of rifles is just downright sweet.
I own a SIG-556, basically the same upper but a lower that takes standard AR-15 type magazines and I couldn't be happeir. The only issue you may run into with the 551 is the cost of magazines, but for that trade off you get a seriously awesome rifle.
Like I said above...why are you still reading this post..you should be out buying that rifle right now...like NOW
"....The swords of others will set you your limits".