Duskweave Bag is 1990g49s in Ah. Craftsim use all Q2 reagent so craftingcost is 4x250g26s+30x27g+2x17s=1811g38s so the profit shoud be 179g11s. As you can see there's no resourcefulness or other stats. Why Craftsim show me a profit of 79g57s39c from average profit and 18g95s39c from recipe scan? I did a scan recipes and 1 sec later i hit search.

It's not AH cut. 179g-5% is 170g

could not reproduce
try again in newest version maybe it was fixed by one of the bug fixes since then