FS: Nike free run sz. 9

I am selling a pair of womens US9 Nike free TR fit running shoes. They are black with fluorescent green lining, and have been used for 2 days at work, one 3 mile trail run, one 3mile track run and approximately 10 miles on the tread mill. They are incredibly flexible and lightweight, and I really want to love them, but they are just not the right shape for my feet. I would like to sell them for $20 including shipping, as they are just taking up space and someone else could put them to good use.