eBay coupler rod vs originals from FOH

Hello people… …now it’s also time for my mom. It’s time to change the coupling rods. So I asked the FOH today about the price. One costs about 45 euros. Now I’ve looked around for fun at 321. And look, clearly cheaper!!!! 2 pieces for 14,40 € !!! See here I want to know from you whether someone has installed these eBay parts and whether they get qualitatively to the Opel dealer. I’m a bit skeptical about that. After all, I don’t have a chance that the things have to be replaced after 5tkm or so because it’s inferior material. It’s called who buys cheap, he buys twice. I hope for a few reviews. Nice thanks in advance… LG Michael