For instance, it is discussed in this press article [1] published in 2016 and available in French. It is mentioned that nuclear power costs 60€/MWh, compared to 80€/MWh for wind power. It is also mentioned quite often in the French press: I have seen it mentioned a few days ago. The source mentioned in the 2016 press article is an official report [2] published in 2014.
However, it is true that the maintenance cost increases as the power plants get older.
Yeah I feel the end of life has not yet been factored in the price (ie the cost of dismantling the reactor or maintaining it alive forever). It would be very aligned with the general philosophy of nuclear ^^ (ie "the next generations will either figure it out or pay the price")
The dismantling cost has been factored in but given that they don't manage to reliably estimate construction costs I don't see why the estimate of the dismantling cost would be more accurate..