The Ready State Virtual Mobility Coach is like having a virtual Kelly Starrett in your pocket.
I’m not exactly unbiased, but I wanted to weigh in with another option. The cost of IASTM sets was mentioned in the original post, and most of the replies. Myometal sets are well made, stainless steel tools, and each set is considerably less than the other sets mentioned in this post.
Three tool sets, with a case included, are only $300 at http://www.myometal.com.