The theme purchase does not include installation, however we do provide theme documentation including installation instructions
here. If you require additional guidance, we provide all support via the
AppThemes forums (please note: this does not include customization support). If your preference is to have someone install the theme for you, and make other customizations to the default theme, AppThemes does not offer these services, however we do have a
certified partners page where you can find developers for hire. If you make contact directly with an outline of your requirements they will be able to provide a quote. Yes you can use the theme for the country you require, it does not have to be the US. The default payment gateway is PayPal, with a bank transfer option is also available. Thanks.