I'm seeing figures all over the place. How much were you quoted (or how much did you pay) for your alterations? What was the breakdown and where did you go? I'll start:
Bought my dress from David's Bridal, but I took it for alterations to a woman who does it from her home. My FMIL knows her, a few friends have used her, and all have said she is very reasonably priced. Here's the breakdown:
125 for the hem (6 layers of fabric)
50 to make the sweetheart neckline a little more dramatic
50 to press/steam the veil & dress
$225 TOTAL
ETA: I'm in Pittsburgh