https://tools.woot.com/offers/milwaukee-2880-20-m18-fuel-4-5in-5in-grinder via the Woot! App : Milwaukee M18 FUEL 18V Lithium-Ion Brushless Cordless 4.5" / 5" Grinder w/ Paddle Switch (2880-20, Tool-Only) on sale for $79.99 (price reflected applied at checkout in the App Only). Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.