claim of $1.8m costs is undermined somewhat.
I’m genuinely curious about how they arrived at that figure. One way to do it would be to add up the marginal cost of manufacturing every damaged component, without any R&D costs needed. However, many of those components will have a specified life after which they would be set aside for use as spares, but not used unless they ran out of parts at the end of the season. The broken parts that were near their normal life should be costed at a fraction of new parts – an engine that’s done three race weekends isn’t worth as much as a brand new one, for example. However, as far as I know, all parts except the power-units can be swapped freely between the two cars, so Red Bull can probably adjust the parts allocation between the two cars to minimize the new parts that they need to manufacture (basically, Perez will get older parts for the final races so Max can stay on fresher parts.) On top of that, some of the aero parts would have been specific to that circuit, so they would not have been used again anyway. Just saying that it would cost $1.8 million to replace everything is a bit simplistic.