V50 wheel bearing, where? OEM?

Dear Volvo colleagues, at my V50 unfortunately the rear wheel bearings are now at 110000km defective. I changed them before only about 2500km, but they are over after these few kilometers. The (Internet) dealer, without naming a name, takes them back without any problems and reimburses me the costs. The quality problem should be known here, as the wheel bearings have been removed from the program and replaced by others. Now to my question: Are the wheel bearings at the V50 identical to those of the Ford Focus? For Volvo I simply find no OEM bearings from e.g. FAG…… Has anyone had experience where I get high quality bearings? What can OEM bearings cost? The original parts are much too expensive in my eyes for “simple bearing with hub”. In advance thank you for your answers, MFG Michael