The "One Price Promise" is our guarantee that you will not pay any additional fees to Science VBS after you purchase the download package. Unlike other publishers, who purport an "ultimate starter kit", which requires you to spend more and more of your budget on extensive and expensive add-ons and upgrades to get everything that is offered, we give all content to you for one price. I'm a full-time children's pastor, and I have never appreciated the “ultimate starter” approach. Ultimately, I am left feeling ripped off. When you purchase Science VBS, you get access to every file, video, poster, video training and more. We promise you will not pay any additional fees to Science VBS. Science Project supplies will most likely come from your church resource closet. Science Devotion supplies can be purchased from three different websites that I provide for you. These are the exact websites that I myself would use if I were purchasing these items. It's a savings for you and it's hassle-free for me. This is the "One Price Promise"