HTML Add-on Product Upgrade Single Developer License 4 Developer Team License HTML Add-on for Win32 v9 to v10 $319.00 $719.00 HTML Add-on for Win32 v8 (or older) to v10 $389.00 $819.00 HTML Add-on for .NET v9 to v10 $319.00 $719.00 HTML Add-on for .NET v8 (or older) to v10 $389.00 $819.00