The OP mentions wear points specifically. If cable rub and other small areas are the only concern then Lizard Skins makes several inexpensive kits.
There is another kit similar to the second link but with fewer pieces. I think it was $12 or $13 at the LBS or REI when I got it. The pic below is one of the pieces from the kit. It has a little wax on the edge of the tape but conveys the general idea.
-Tim-