Maxmind has a pay as you go option as well, which I am using for my site, and it is extremely affordable. You are also allowed to cache their data, which I do a

Maxmind has a pay as you go option as well, which I am using for my site, and it is extremely affordable. You are also allowed to cache their data, which I do and saves a ton on cost. Also something I haven't done yet, in your cached data, you can manually change IP address to Location mappings in case there are any locations you want to manually specify. This is the service I use: http://www.maxmind.com/app/web_services_omni http://www.maxmind.com/app/web_services_omni and if you ask they will probably give you a trial account. I use it here: http://localbeer.me http://localbeer.me