Click on that link to get to the Estimator feature on RepairPal. It will give you a range for the repairs in your zip code. $422 - $572 is the range shown for your Town Car's fuel pump in your area -- figure that the low side price is aftermarket parts with an aftermarket repair shop, the high side is dealership parts and labor, and in between is a combination either way.
You list Frank's in Walnut Creek as in the lower price range for replacement of a fuel pump in a 2001 Lincoln town Car. They quoted me today $1000 for a replacement, which is beyond the top price shown on your site. I found them once before to pad the price upward, and do not consider them trustworthy.