Well I was going to say that the Wilson is overpriced, but the prices you quote are far more than a Bushmaster costs here.
I don't own a Wilson, let me be clear about that. The Wilson is a fine rifle, but, to me, it doesn't offer anything for the extra money. And even with the prices you quote, it is still a pretty substantial difference. I do own two Colts and wouldn't pay anything extra for them either. They are also terrific rifles but again, they don't offer anything over the Bushmaster. My Bushmasters are very accurate and have been totally reliable. The quality is as good as anything out there, bar none. The finish on my Bushmasters is without question better than my two Colts. But I don't really care about the finish as this is a military type weapon and not intended to be a showpiece.
Believe me, when I bought AR15s 2-6 money was not an issue. I am not rich but if I thought I could get a better rifle for a couple hundred more, even five hundred more, I would have paid it without batting an eye. Same holds true now, if I was buying another AR15 which I am bound to do, I would be willing to pay $1500, but I wouldn't because I would buy a Bushmaster confident that I am getting as good of an AR15 as is made.