If you want to run just a single wind assessment, then simply pay per assessment, without subscription fee or any other cost
If you think you will be using the wind tool more often, and you value free consultancy, then go for our subscription and enjoy the following benefits:
If you only consider the difference in pricing of the wind assessments, then you already benefit from a subscription as soon as you have 2 projects per year, each having 4 design variants to assess.