Here you can try AVCAD for Visio for 2-weeks as trial.
Here you can buy AVCAD for Visio license for a month or an year subscription.
Payment method: Credit cards and Paypal.
During the subscription customer gets AVCAD license, all the updates and support free of charge.
After purchasing you will receive an email with your product key.
To activate your license, please, visit this page
Qt stands for Quantity. For example:
Qt.1 means one license (for one person)
Qt.2 means two licenses (for two people)