Costume Jewelry - Who Knew !

Last year I was helping a friend clean junk out of a house. As a "thank you" he gave be a small box full of costume jewelry.
A couple weeks ago, I decided to go through the box to see if there is anything valuable.
I have been finding out that old 'retro' jewelry is actually worth quite a bit of money. I just sold a plastic bracelet for $15 ( called a 'lucite moonglow bangle' ), and I'll have more stuff going up as soon as I figure out what it is.
That little box of 'junk' turned out to be worth roughly $250 - $400 !!!