The cost is considerably less than some of the fees being charged by other edtech companies (less than 1%) and I feel that the data returned is much more useful in directing immediate classroom instruction for individual and groups of students. Another positive in my mind is that it does not rely on a third-party (besides Google anyway) to run and you will own the student data in your own personal Google account.
The results are integrated into a single-view dashboard appearance with data filtering options, student confidence level and overall correct percentages (see image above). Within the dashboard there is a history of 10 questions that can be seen for after class reflection by the teacher. No editing is required by the end-user but there are some options available like integrating a class list to show who has not yet responded--it can also detect which class is submitting answers and unlike other web-based student response systems the teacher has the option to set the correct answer in the question set.
I've priced it at $5 for a single user trying to keep it comparable to an app price. The cost is a one-time fee and only needs to be payed by the teacher, the students will access it by one link shared for an entire school year. School and district pricing options are also available with a little humor in the pricing for edtech companies.