Uh, my paper shredder was $12. I think that the first thing I shredded might have been the instructions. Then I promptly proceeded to shred a neck-tie, in deference to the warning printed on the unit. I might never have thought of that, were it not for that little warning graphic.
While the maximum stated shredding capacity of my unit is 5 sheets, I found it to be capable of over 10.
I've never thought about oiling it though. I might never think of it again either, until it stops shredding.
Actually, I think given my propensity to over load the thing by shredding neckties and stuff, I think extra oil might become a fire hazard.