Anyone ever replace a shower pan?

sounds reasonable to me.
i just saw this on the HGTV Website:

Shower Pans
House Detective : Episode HDT-607 -- More P

Replacing the shower pan is a big job. In a tile shower, the entire floor and part of the wall has to be torn out and replaced. If your shower develops a leak at the base, there's a good chance the shower pan needs to be replaced.

If you suspect you need to can your shower pan, consult a professional and prepare for sticker shock. Depending on the labor involved, replacing the pan can cost more than a thousand dollars.

Still, that's a lot less than replacing an entire bathroom floor or cleaning up the moldy mess a leaky pan can cause

I replaced mine, but also did the entire shower along with it. Sounds like a reasonable price, assuming you're going with some nice tile