To be more specific, the hardware is usually ~$1200.00 shipped for the rework station alone, if you're going professional with dark-infrared for example. After that, you need the right solder balls, flux, and stencils. Not to mention a, preferably, small hot-air wand for handling the reballing itself before reflowing the chips back onto the boards. All that usually comes to another $600.00-$800.00, bringing you up to ~$2000.00 just to get started. Next, you need a good year or so of experience before you even attempt professional reworking as a business, as 70%+ of the time, you'll end up popcorning the chips you're lifting while you get used to the quirks of your station/probes, which means destroying the chips.
TL;DR - Reworking is expensive and really hard, get someone else to do it.