"Makita wants $75-$95 for a 14.4v battery"
My only cordless drills are an 'egg beater' drill that I bought at an antique store over 10 years ago for $5, and a brace and set of bits at another for something like $20. The egg beater drill works well on everything but steel, but even a friend's 18v Dewalt cordless had problems on the last large steel project that we worked on.
I picked up a Makita 6501 (?), a +4000 rpm 1/4 in corded drill for less than the batteries mentioned above. It complements my 1/2in Milwaukee corded drill so well that they should sell them as a kit. It's very compact, light, and the speed is high enough that I can even use the rotary files that I've had for years but didn't use much.