Home Depot sells the RYOBI compound miter saw for $189 as a bare tool. Right now, you can buy the kit, that includes the RYOBI miter saw (P553), a 4Ah battery, and charger for only $149.

Tool companies will sell bundles like this to get consumers into the battery ecosystem, but this isn't a BOGO deal, where you buy the tool at regular price and get the battery and charger for free. This is a discount of the price of the tool itself and the battery and charger are included.