I picked up a small set of jewelry pliers at Hobby Lobby (jewelry making section) for under $15. Has a couple of pairs of flat nose in it that are useful to me. You can also use a hard flat surface, like a piece of glass, and a couple of single edge razor blades. One to hold the PE at the bend line and the other to slip under and make the bend.
Take a look at Micro-Mark and see if they might have something that would fit your budget and needs.