@Admarnelson Thank you for your inquiry! Please know, CISSP seminar/exam vouchers can only be purchased from a company purchasing in bulk to provide training to their employees. If you are looking to purchase the CISSP exam, you can register an account (if you do not already have one tied to your (ISC)² profile) at Pearson VUE and pay via the website. You may also contact via phone at Pearson VUE Support.
I hope this helps. If I can assist you any further, please don't hesitate to DM me.