that's the point.
Your not supposed to get paid for doing a good deed by giving clothes to the needy.
If your looking to get money have a yardsale or sell them on ebay.
you get a paper that give you a tax break. so when you file your taxes you submit that to your accountant or whoever files for you and you get a small break.
Goodwill accepts donations, They don't pay you. Look for a consignment store. The will display the merchandise and pay you a portion of the sales price.