Do I have to pay to use the PDFTron package available on NuGet? I use to convert pdf to pdf/a

I am currently using the nuget package that converts the PDF to PDF / A. But I would like to know if I have to pay to use this package?

I am using PDFACompliance on PDFTron.NETCore.Windows.x64

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Yes, PDFNet is a commercial product. To get a quote please fill in this form.

If you are looking to just convert the occasional file for personal usage then you can use this free tool.