The fees charges are expenses for Bytro - a cost of doing business that they will claim on any tax liabilities. When someone in the same country spends more on mobile than they do on web version then that have nothing to do with regional variations.
Any decent company would swallow the fees they get charged as part of their running costs. As i said I am thoroughly disgusted and disappointed in Bytro over their decision to charge more for their mobile platforms that they are forcing everyone to use by their annoying message that won't go away even after you have logged via mobile. If it costs them more when people use mobile why would they push it so hard - or is it that they can charge more on it and increase their revenue.
You can spin it however you like to me is looks a push to generate more sales at the expense of unsuspecting players who do not realise the mobile prices have been jacked up.