I wanted to comment on the original post but comments are turned off due to it being an old deal.
I purchased it for $14.99 from Kogan but I assume they are all one unit being sold by many providers, Me being me I left the box of the mighty 40 Piece 3.6V Cordless Electric Screwdriver Kit outside on top of the heat pump unit.
Realised after one month that the kit is missing and found it outside waterlogged, I had lost all hope looking at the state of it plastic box was full of water, I took a deep breath and with no hope of it turning on I gave it a go, To my surprise the main unit not just powers on but works as good a it was on day one, the most damage was taken by the bits in form of rust which i will clean off later but such good durability from a a cheap item was worth a shout out.
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Its pretty powerful tool. Ive had this for 2 years plus now and use it for assembling furniture's etc. The torque is great and even you can twist at the end manually to help tighten more and it doesnt impact the motor. Ive only charged this thing 2-3 times, battery is great too!