Hello Neil,
Thanks for your interest in VisiRex - our exciting new, interactive program for data mining, data modeling and knowlege discovery. We are trying out a new flexible purchasing scheme where you can purchase one of more serial numbers instantly on-line using a credit card through our secure Digibuy site. Every time you enter a new serial number, you registration is elevated to the next level. You could purchase several serial numbers at once, or one now and more later. The charge to your credit card is processed by Magnum DigiBuy in the amount of $99 US. per serial number. DigiBuy can also handle phone and fax orders. Click the [Purchase] button for details.