Shrug. Sorta like ARs. You have a LWRC that can be the price of two Colt 6920s. Does the price matter or the function?
If the Sig fits your hands well, shoots well, does for you what you expect, then the price will be moot. If you are concerned about the cost and dwell on it, the Sig will probably never feel 100% to you. I know, been there.
Of course, I say that as my local FFL has a lovely two tone 229 for $700 . . . that I have handled . . . and liked, nay, lusted after.