The tax is said to have been at least 15,000 pesetas per computer. For reference:
* 15,000 pesetas are approximately 90 euros. (As per [http://www.unitconversion.org/eu-currency/spanish-pesetas-to-euros-conversion.html THIS] converter)
* The CPC472 itself was sold for 66,900 pesetas ('''how many?''' 400 euros)
(For reference, prior to the introduction of this law, a CPC464 system ''including green screen monitor'' was sold for only 25,000 to 30,000 pesetas / 150 to 180 euros (as per [http://www.amstrad.es/forum/viewtopic.php?f=19&p=18955#p19008 THIS] admittedly anecdotal forum post...))