Mock cycle

Hi! I’m having a laparoscopy tomorrow to rule out hydrosalpinx and endo/address them. At the same time I’m doing a mock cycle and they are running these tests: EIP, D score, and N cells. They also offer the ERA for an addition $715. I initially wanted to do it so we leave no stone unturned (after so many losses and my prior clinic refusing to do any other testing), and my doctor at this new clinic is willing to run any and all tests (which I’m grateful for), but he doesn’t necessarily believe I need the ERA since I have had successful implantation, even though it ended in a miscarriage. I know the research is mixed about the ERA, and my doctor is on the fence about it. I am going back and forth about whether or not to pay the extra fee and have it included so I feel I’ve done everything possible, or if it’s not worth it! Any insight would be appreciated!!