thank you for the answerThe current prices are listed on the purchase page. Once purchased, a license can be used indefinitely for no additional cost; it is not necessary to renew it annually.
Included with the initial purchase are 12 months of support and updates. After that time, you can continue to use the license but in order to download newer versions and benefit from ticket support, a 1 year extension would have to be purchased. Extension cost depends on whether any official add-ons are attached to the license - the current costs are listed here.