Terms of purchase
All software is, according to the buyer’s wishes, delivered either by downloading from a special URL or by airmail on a USB.
All orders are placed by email to email@example.com
An invoice with payment instructions will be sent by email.
When a CD is copied to several computers, there is a general quantity discount, following a square root rule, implying that the cost of n copies is the square root of n times the normal cost of the CD. Thus, for example, 2 copies of the extended student version of aGPSS is 1.41 × $90.00 = $127.00.
An invoice with payment by PayPal will be sent by email.
It the buyer prefers this, the invoice can be in euros at the present rate of 1 USD = 0.85 EUR.