From SV_741_India_Bravo's link to Sheppard Air:
Don't worry... unlike other test prep programs, you won't be disappointed by finding 25 questions on your FAA test you've never seen before... we won't let you down... we guarantee it.
If "unlike other test prep programs"
only Sheppard Air has all the questions, then it sounds like someone in the FAA is passing the questions directly to Sheppard. Could that all end in tears sometime?