Bought a Remington Ceramic Hairclipper in chemist shop for €26.99. No lubrication required. We all use it and save a fortune!
There is a demo video with it.
I also have a Remington which I have never had a problem with. I've had a handfull of hairclippers over the years and the Remington is the only one that has been consistently reliable. The no-oil required is a definite plus with this brand - not sure about others.
My advice, listen to jasconius and but yourself a Remington.