I mentioned that I also had plans to make one for a friend, and because they are quick I finished her's as well:
HERE. Its inexpensive and I used two skeins for each scarf.
If you want to crochet your own Laura Fringe Infinity Scarf, you can find the free pattern HERE. Annie and I are thrilled with ours (she didn't take it off all afternoon when I gave it to her) and we can't wait for winter so we can wear them.
I'm thinking of crocheting a couple for my Threadbare Handmade shop as well, so if haven't already head on over and like my shop to receive updates of new items I list :)