Wedding Dress

I'm selling my beautiful wedding dress. The clothing tag says it's a size 18, but I sized it down to a 16 (normal size 14). It's beaded all the way around, with a semi-long train. It has a beautiful beaded detailed bust, no sleeves and tapered around the belly. It's very comfortable and easy to move in. I wore it for about 5 hours. Here's the issue... the bottom of the dress is dirty. I must have dragged during the wedding. I tried to hand-clean it, but it's still has dark spots, and may need to be trimmed off. I'm asking $150 of best offer.