Got mine at Home Depot...I went to the local and they had homemade ones for around $32....they were short for me ( I am 6'2") and hollow....no heft. I went to HD and found tucked away in a corner, what they call Digging/Tamping bars. this thing is about 6 foot tall, black and pretty solid.
I have no problem hefting it around, but you could easily mod it (cut off part of it) to suit you if needed. It is SOLID and does the job great....best part...cost the same as the "homemade" ones. Hot tip....either drill a hole through it or tie some kind of a strap on it....if you punch through in one hit....you could lose it from the momentum....also works great to take the edge off your holes if they weren't augered as straight as you would like.