public String formatList(double amount, boolean mat) {
		StringBuilder builder = new StringBuilder();
		boolean close = false;
		if (econ != null && amount != 0) {
			builder.append("(");
			builder.append(amount);
			close = true;
		}
		if (mat) {
			if (close) builder.append(", + ");
			else builder.append("(");
			builder.append("materials");
			close = true;
		}
		if (close) builder.append(")");
		
		return builder.toString();
	}