I think BP hobbies had the Magister airframe for $103. This is why I was confused
The Mentor is the same size as the Magister. It's just a better design which makes it lighter and is made for use with brushless outrunner motors only. No more of the red plastic like the Magister had. It also uses dual aileron servos and the battery mounting is much better, but essentially it comes from the same mold.