Additional payment for Certified Translation

I hate it when I buy something and someone doesn"t tell me about the price that I will have to pay for it right from the beginning. When people are lying to me I get nervous. I want to be exposed to truth and when this is not the case I feel that I am being cheated on. Do you know what I mean? It might be really frustrating and I hope that situations of that kind won"t happen too often for me. The situation of that kind has happened to me with Certified Translation and it made me feel terrible. The thing is that I have paid for a translation and I have been informed later that in order to get it and to be validated I have to pay extra cash for Certified Translation. Otherwise the translation won"t have a certificate and I wouldn"t be able to use it. Don"t you think that this is really strange and that things of that kind shouldn"t take place? After all I should have known right from the beginning what would be the price for this service. When you go to a store you see a price of some product and you know that this is how much you have to pay for it. They can"t change the price suddenly and yet it happens from time to time in case of services. I think that it is really frustrating.