Surprised to find FOUR inclines in the box - so enough to raise two tracks one inch and bring them down the other side (I'd not have bought the second one if I knew that).
Lovely product, well made, works really well, the thinner end being a little fragile naturally. Happy with the purchase.
Take one at a time durability, well it is made from expanded polystyrene, so it isn't going to be as good as say plywood. Entertaining, it isn't entertaining, it forms a purpose which ultimately is entertaining I.E. a model railway scene. Educational also not really, it is a useful object yes as it allows you to make an incline in an easy way. So no it isn't educational. But what it does do is to make an incline without all the palava of calculating a rise or fall from an incline. so in that case 100%. Would I buy again yes I would to make a new track layout.