Yes, it is free shipping, but please be aware that it will ship from China, so average delivery time is 2-3 weeks.
Please do not expect very high quality when you are only paying $3.99 for an item AND the shipping. I think it will be a neat little gadget to try out - for a little while at least - until the novelty wears off or it stops working properly :)
I found this deal on anothet site, so THANKS to MISTERCHEAP over at fatwallet for sharing this deal!
For those of you who are fatwallet members, I believe this site offers 3.5% cash back.