IDnotify, a part of Experian, is part of the MAX Benefits at no additional charge. You can review how much you paid for MAX benefits by logging into your account and scrolling down to the blue link 'View order details'. Select it and it will provide you a drop down of your fees you paid this year. MAX benefits should be clearly identified as such. See the attached screenshot of what this will look like. 

You can also search your email for an email from TurboTax entitled 'Order Confirmation' which should detail your fees in the same way as above.