Why is so hard not to mention $$$ to buy just one batt. After visiting 3 H.D.'s including one which has only been opened 2 wks. I can't find where I can only buy one. There is a 2 batt. with charger setup but I don't want another batt & charger. The store Mgr. checked then gave me the # to Ridgid which gave me the # to Gardner Inc.( auth. Repair & parts) I was questioned how much I liked My drill! She then informed me that I could buy one for $280 (But I was in luck the cost was reduced from over $300!) WHY?