Country selection best practices

I have a webstore in two currencies, each having a different shipping rate. What is the best way t开发者_运维百科o send the user to the right store? Setting up a splash page and ask the user to choose his shipping country, get the country information through a popup, or routing through IP detection?

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I would start with using IP detection and then when the page first loads suggest the country he or she is in.

On that "splash" page, allow them to pick a different country if the IP detection is incorrect and suggest other countries surrounding their country that was detected.

The reason I would allow the selection is because IP detection isn't foolproof and depends on many factors.

For example, they may be working in a remote office out of Dublin, Ireland but are connected through their company's network in New York, USA.

Hope this helps :)