Hey thanks!
I would say all in all it was somewhere between $1500 - $2000? The most expensive parts are the frame ($300), slide ($450, because it comes pre-cut with sight cuts, serrations etc.), got a good deal on the barrel ($200) from a forum user here, I actually bought 2 grips (red and blue, $99 each, saving one for my next build), Atlas 9mm 140mm mags ($88 each, Black Friday deal last year).
Hope this helps!