When I was at Target, I found them 4 for $3.99. I snagged a package to try it out. I designed the towels on my Silhouette software, and then mirrored them. Then I printed them on iron on transfer paper that I have had for a few years.
Then I cut out as much of the white space as I could, and ironed them on to the towels! Super easy, and it only cost me $4 to make 4 towels.