Sadly in many jurisdictions such as the Moscow Patriarchate, they charge you for the sacraments.
According to the Orthodox Faith, this is a very heavy sin, it's called simony, and in the True Orthodox Church, if anyone wants to charge anyone for a sacrament, he is subject to excommunication on the spot.
Some, as it happens in Russia in the temples of the Moscow Patriarchate, will set fees in the parishes, if you want to be baptized by the priest, it's N... but if you want a Bishop to baptize you, it's more expensive. If you want a private baptize, you have to pay more.
If anyone charges you, either directly, or by suggesting what "is customary" or makes you feel you "want to make a donation for a sacrament" or oblige you by saying "this priest has to travel a long distance, etc.", that person is comitting the sin of simony.
According to the orthodox canons, sacraments are done by free, and if anyone wants to pay for them, the priest or bishop should not accept it. That's the canonical and decent thing to do, but of course, decency is a rarity in the Moscow Patriarchate and the rest of World Orthodoxy.
My spiritual father and my cross father payed for my baptism, the cross, the icons and everything, they took money from their savings and donations, and refused my family to give them any money, and helped us do the pilgrimage to the monastery. My father wanted to give them some of our best goats for them, and brought them some kasha, but they did not accept anything, because it could be considered a payment for the baptism. All of our Bishops and priest must work hard, and earn their living, and they are always generous, well most of them. Not once did my spiritual father or anyone made us feel they did a sacrifice, and now we must pay back the favour, quite the contrary.
On the other hand, Bishops and Priests of the Moscow Patriarchate are bureaucrats and receive a very nice paycheck from the government, they have money, recently, the Russian Government made a 100 million dollars public donation to the Moscow Patriarchate, as their "christmas payment".
And that's not all, they receive millions of euros from organizations such as UNESCO, to keep the churches and places considered "patrimony of humanity".
World Orthodoxy is also like this, their Bishops and clergy are bureaucrats, employees receiving a salary from the governments and they really don't have the right to charge for something they are already being payed for.
You should have the right to go to any church, and demand to be baptized at no cost, and no one has the right to say no.