As I stand on such toys, I want to test also this "cheap" offer. I must say for the price I did not expect too much and was ultimately surprised. Although the replica does not work but is quite lifelike aktzeptabel. The weight allows for use on a substrate without permanent hold. The size also allows a decent pack ... both holes open into the same channel, the Anuseingang is somewhat narrower, but certainly does not act as an original. The channel is no structure and has no anatomical shape, but that no one can be expected for such a price. The feeling when traffic is quite comparable with the real, but for the money you should not expect too much.
My conclusion a true price / performance hammer and who would not want to spend much money for this simulation is the first choice. Something better for less money there is not, on the contrary, as many more expensive cut reproductions from much worse.