Power steering advice needed

OK, fluid is leaking from the pump and the resevoir is dry. Hence, I think the pump is shot. Here are the options I'm considering;
1. Reolace with a remanufactured pump from Murray's ($105)
2. The dealer manual (thanks Bryce) says to replace the seal and o-ring. My dealer says he can order a "kit" for $41.
3. Buy some power steering fluid with the so-called sealant (I know I'm supposed to use ATF but that stuff always worked on my Lincolns).
Also, with the exception of backing out the diveway (low speed), the car steers almost normal. Am I screwing up something else up by driving it this way?

I would go with the rebuilt.