The only honest answer would be you can't put a pricetag on a child.
As T3XBOT said the other expenses should be carried by the clinic, if you can proof a mistake happened.
The value is zero because they NEVER WANTED THE BABY which is why they got a VASCECTOMY.
Not sure what part you are struggling with, if some one dumps concrete on my lawn and i sue them they do not get to counter sue for the value of the concrete.
You "can't put a price tag" on pretty much anything the civil courts are putting a price tag on. Peace of mind, a relationship, pregnancy, sex. The judge in the case even specifically cited the normal costs of a surrogate mother as a reference to put a dollar value onto the burden of a woman carrying a 'wrongful conception'. The entire point of the court case is to determine the value of these non-goods, non-services, so that they can sue over them. The jury determined what the value of sex was, what the cost of pregnancy was, how many dollars your emotions are worth. They even had precedents on risk and exposure for waiving values, such as the inherent emotional jeopardy associated with being in a personal relationship negating the monetary value of someone else compromising it. All those values translated to a fungible currency tradeable for concrete.
They were required to also determine the value of a human life and the benefit it will bring to a family. They absolutely do get to deduct the 'value of the concrete', that was right in the jury instructions and judge on appeal. It was up to them to determine whether that concrete dumped in their yard that they got to keep and benefit from, had inherent value or not. To a jury, is a human life just a burden and will bring only the costs associated with disposing of the unwanted little brat? A worthless little unwanted concrete blob dragging you down, with no redeeming merit, with no reason to be alive, and nothing but the grace of legal codes forbidding a post-birth abortion to force them to maintain such a toxic asset. Well, that's the view of the jury, at least. A life is worth $0