Home Depot has Milwaukee M18 18V Brushless Cordless 4-1/2″ / 5″ Grinder + 5.0Ah Battery & Charger (2686-20-48-59-1850) for $144.99. Shipping is free.

Includes:

• 1x M18 brushless 4-1/2 in./5 in. cut-off grinder
• 1x type 1 guard
• 1x type 27 clip-on guard
• 1x side handle
• 1x back flange
• 1x flange nut
• 1x wrench
• 1x 5.0ah starter kit

Features:

• Paddle switch design for increased comfort and ease-of-use when operating in various positions
• Tool-free guard adjustment for faster guard installations and adjustments
• Compatible with all M18 batteries
• 5/8 in. to 11 in. spindle for use with common grinding accessories
• Overload protection: maximizes motor life
• Electronic clutch for kickback protection