Hello,
Can I be honest? No one is going to pay $20 conus for a sweater from Express. I've seen RL Black label go for $30 so $10 less for an Express would be out of the question.
I think you're best posting it on SW&D or ebay. Still, that is not worth it b/c those sweaters go for $20 on sale. Just a tip . . .
Cheers