I swear some people think that we just mix up a bunch of ingredients, put it all in the oven and set the timer; when the timer dings we pull a fully finished cake with perfectly smooth buttercream or fondant (depending of course on which ingredients we used) from the oven. You know, "simple"! We then proceed to add decorations, and that's when we get to really stick it to the customer and over-charge!
Bummer, I've obviously bought the wrong ovens. Have you got a link for these ones?