For all those who say "It's the price, not the shape". Here are two boards, Crazyfly Allround and Crazyfly Raptor. Allround is for beginners and Raptor is intermediate.
Let's start with the Raptor. As you can see the rocker is constant, nothing special, most of the boards have it that way.
And here is Allround. Look closer at it's curve. In the middle it's almost flat, curving only at the tips.
So there is difference in shapes. And I think it's the same situation with all beginner boards.