Also picked up an 18 VDC Harbor Freight drill driver.
Recently had to drill out a 5/64" hole to 1/8" in the side of a 12 mm shaft to accept a 3/32" cotter key.
Got lucky. A 1/8" drill reamed out the hole while I managed to keep the drill bit aligned with only free hand alignment.
Surprise, got the hole reamed out without breaking the bit.
My less than $50 investment for a box of drill bits and two (2) 18 VDC drill drivers served it's purpose.
Guess there is a place for low cost tools.