HiddenAsbestos: Hi, yes in Europe the software costs $19.99 plus your local VAT, converted into your local currency. So for me here in the UK that's just under £15.
FastSpring are required by European law to add VAT to your bill (based on your location, not mine) and give it directly to your government. This isn't extra money I see or control the rate of.
As for the extra address details they do make verifying your purchase a lot easier if you have a problem or decide to upgrade to a new major version. Also for FastSpring purposes it may cause problems with credit card processing and so you may have trouble proceeding there. Apologies for any inconvenience caused.
Actually, by my calculations, the actual price of Grid Cartographer with VAT added is a little over £17. The £14.65 mentioned at the beginning when the site detects your location seems to be based only on the $19.99 price only.
Unfortunately, while I could argue myself around paying $20 to support an ongoing development, $24 is a bit too dear.
I'm going to try the free version, and see whether it becomes an essential piece of software, at which I may just have to arm wrestle myself into submission. :P