Home Depot offers the Ryobi 18-volt One+ Compact Lithium-Ion Battery 4-Pack, model no. P181, for $99 with free shipping. That's tied with our December mention and the lowest total price we could find by $31. They provide fade-free power and are compatible with any green or blue Ryobi 18-volt One+ tool.
Home Depot offers the Ryobi 15-Amp 10" Sliding Miter Saw with Laser, model no. TSS1020L, for $179 with free shipping. That's the lowest total price we could find by $20. It features a carbide-tipped blade, laser alignment system, and maximum speed of 4800 rpm.