I agree I would not buy the Milwaukee tool for $450.
But one should be looking at a "line" of cordless tools and see which is likely to meet your budget and needs. Then buy one tool with battery and charger, an extra battery and then all "bare tools". Bare tools are typically very reasonably priced.
For Milwaukee I have a drill, impact driver, impact wrench, 4" grinder, vacuum, weed whacker, hedge trimmer.