If you already hold one or more paid-for licenses and your new purchase is replacing these licenses, please supply the serial number of the existing license(s) when making your order. You can find this by opening the license file in a text editor. You will be charged the full price for your order, but Saxonica will then refund you the residual value of your existing licenses, up to a maximum of 70% of the new order value.
The residual value is calculated based on the "maintenance expiry date" of the existing licenses, that is, the date on which your free upgrade entitlement ends, which is normally 12 months after purchase. 12 months before the maintenance expiry date (normally the day of purchase) the residual value is 70% of the price paid; 12 months after the maintenance expiry date the residual value is zero; between these two dates, the residual value declines on a linear scale (that is, by 1/730 of 70% of the initial price each day). This means that if you renew your license punctually on the maintenance expiry date, the refund due is 35% of the initial purchase price.
If you paid VAT, then a corresponding proportion of the VAT will also be refunded. The refund will be made not more than 15 days after payment for your new order reaches Saxonica's bank account.