✔ 最佳答案
Hmm, UK£ 100 = 163 U.S. dollars...
For a quality new 18v cordless drill with two Li-Ion batteries, you're probably going to have to pay more than that.
Here are the best reasonably priced 18v drills:
http://www.howtodecide.com/cordless-drill/#~tf.type=y&battery-voltage.18v=y
Start by deciding whether you need a drill driver, an impact drill, or a hammer drill. (I'll assume you meant a drill driver.) Then explore other factors that are important to you...
Given your request for 18v, your request for two speeds, and your request for two batteries, I see two possibilities (but both are around UK£ 171 ($280 US)):
Makita BDF451 18-Volt 1/2-Inch
Bosch 37618-01 18-Volt 1/2-Inch
The Bosch puts out a much greater max torque (650 in-lbs vs 450 in-lbs) than the Makita, but the Makita weighs in 1.5 lbs lighter. I'd lean toward the Bosch myself.