I honestly think it's worth the original price you had it up for. The rifle from stock from the dealer, I'd ask like 1000 with a few hundred down the pipe. Between the it all, there's about 500 of extra parts on there, I think that should garner 200 on the asking price.
As said, for some people, the parts mean shag all. However, it doesn't mean that it should sell for a price of a stock rifle. Different strokes for different folks.
My advice, keep her and enjoy her. If I was going back to a similar length AR, I can assure you it'll be a Stag from Arms East. But, that's just my $0.02