This calculator calculates the profit from buying items from the Nardok's Bone Weapons in the Cave Goblin Mines and selling them on the Grand Exchange.

Item	Cost	GE Price	Profit
Bone club	1 x 600	934	&0000000000000334000000 334
Bone spear	1 x 600	263	&-1-1-1-1-1-1-1-1-1-1-1-1-1-4-4-7000000 -337
Bone dagger	1 x 2000	2,306	&0000000000000306000000 306
Dorgeshuun crossbow	1 x 2000	998	&-1-1-1-1-1-1-1-1-1-1-1-1-2-1-1-2000000 -1,002
Bone Bolts	1 x 4	6	&0000000000000002000000 2