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The price:

To make the QAMA calculator's routine usage acceptable, even attractive, the required precision of the estimates must be found to be reasonable. The 'strictness', therefore, must reflect the complexity of the respective calculation - of which there are infinitely many. Thus, the QAMA calculator is a highly complex product.

However, as our main goal is to see this calculator in regular, routine use by every student- so they never calculate without using their head, we set the unit price to a level that is regarded throughout as surprising:

USA:$18.20 / UK:£14.90 / EU:€17.80 (+the actual shipping costs, which are most economical for sets of 30)