The box also has a good size, and so I finally half my household is packed (on Amazon, I could always afloat reorder when I ran out of stock :-))
I had at first a few cartons of hardware store, which each were even more expensive with 2.39, but not qualitatively heramkamen to the professional board.
Delivery within 2-3 days was also without problems.
Conclusion: can 100% are recommended.