How to add 10% to all orders and dont hesitate

Find some online payment service for my http://ru.myplano.org/.

But how we choose – we develop online store now and we have a little time. And prepared module for this is only by Robokassa.

I used Robokassa when buying some products in Russian online store and all time a have +5 are +10% to my order. And all time I asked – why??? And I thought that is Robokassa specifically.

But the deadline is coming (oh, I don’t like this) and we use Robokassa. And what do you think? My Robokassa account… don’t have +5 are +10% to my customers order.

The answer is simple – Russians sellers added to customers orders their… sellers taxes (in Russia don’t have any tax for buyers).