It's always Free Freight*
*Except to Alaska and Hawaii
If you go to the TCP Global website, they actually do offer free ground shipping, and you can buy a 5-pack of them for $9, which is more realistic.
I'll have to post up a pic of my windshield wiper removal tool that I built. But it won't work on my AD. It's just for the ones that have a nut on top.
[on edit] here's a pic of the tool I built to remove wiper arms that have a flip up cover with a nut underneath. Had some square tubing laying around and a nut and bolt.