-- Speaking as someone who goes to the Salvation Army all the time, it really isn't outside the realm of possibility for them to go in there and find a brand-new pair of never-worn eighty-dollar designer jeans from the Gap for sale.

Testify.

My favorite pair of Luckys is from Goodwill. Got them for $6.99.

I also once scored a NWT pair of $200 (authenticated later) designer jeans for $20 at a Buffalo Exchange.