Very important accessory for meaningful villas Duplo game, but why is this plate so thin?

The large, in this case green, building board is an important foundation in the game with your DUPLO bricks for our daughter.
It is based on all the pastures for their farm animals and uses every free spot for loved flowers.

What bothers me on the plate and not on the pictures can be seen, is the thickness of the material.
Why does this Lego plate not at the level to match other base plates, for example. Where the farm?

A quick and safe clearing away is not so easy with the thin and quite flexible plate.
We bought the plate for 8.90, so what is just under.
Alone because of the thickness I give only 3 Stars. To make a purchase to get past still hardly.