Terms of purchase
All software is, according to the buyer’s wishes, delivered either as a USB, a CD or by downloading from a special URL.
All orders are placed by email to firstname.lastname@example.org
An invoice with payment instructions will be sent by email.
When software is copied to several computers for classroom use, e.g. on a network, there is a general quantity discount, following a square root rule, implying that the cost of making n copies is the square root of n times the normal cost of the CD. Thus, for example, the right to make 16 copies of the normal student version of aGPSS is 4 × $40.00 = $160.00. Only one USB or CD will be supplied.
All prices above are inclusive of shipping costs.