I asked the same question in the 100 days to success on the 2015 mcat and the next step tutor said it's fine. I was thinking about getting it too and hesitated. I filled out the online form like halfway after entering my email and name and all that but didn't complete. A day or two after they emailed me saying we would like you to complete the registration so we are offering you a 15% off code for the 3 month plan. I don't know if it happens to everyone but it doesn't hurt to try if you do plan to get it.