I had a bunch of vest panels I just sold - South Sea Imports - $5 a panel - they had good beach scense on them. One lady was going to use them for her bow-tuck bags.
I agree, that vests are no longer in style, the uses for the panels are still there - creative people will use them to make one of a kind items.
I sell my fabric anywhere from $3-$8 a yard/panel depending on the quality of the fabric line and where I purchased it from. I plainly list if the fabric is average grade or stiff, so the buyer is aware of that before making the purchase. I definitely don't want a dis-satisfied buyer.
Some of the older (out of print) lines are highly sought after, so putting a $5 price tag on them isn't asking too much at all.
I've sold alot of my grandmother's stash that I inherited. I know where she purchased her fabric, because I was the one who took her fabric shopping. She had alot of the same fabric that I have.