public double calculateBuildMaterialCost(BlueprintAssetVO bpavo, long marketHub) {
		ArrayList<ItemListing> materials = bpavo.getBlueprint().getActivity(IndustryActivityName.Build).getMaterials();
		double cost = 0;
		for (ItemListing il : materials) {
			cost += market.getItemLowestPriceByStation(il.getItemID(), marketHub) * il.getQty();
		}
	return cost;
}