Hard to say, since sometimes nowadays PD tries to follow real-world price dynamics, sometimes they artificially bloat or shrink prices.
In GT Sport they had a flat rate of 350k/450k/1M for groups 4-1, even though a collector group C car would go for WAY more than a simpler LMP1 diesel car, and hybrids would also be excessively priced.
7 is odd because you can still get the VGTs at a 1m flat rate, and then the Group 1 options vary wildly from 1 million to (I believe) 10 million, usually for a collector group C that isn’t even competitive.
From my real world experience, I don’t know exact prices, but Hypercar/GTP was designed to be cheap to run to prevent another LMP1 or GT1 collapse, and it’s achieved as much, given just how many teams ended up running independent privately-ran Porsche 963 operations. The operations budget of one of these cars ranges wildly from around 15-50 million, and that comes down to operations partners, which championship you race, and what car you have. The car is one thing, you then need to pay a crew of likely over 100 people to run it, storage, transport, fuel and tires, driver salary contracts, which can be crazy different team to team. Penske, for example, actually gets paid by Porsche to be the operations partner, because they have the records to back up asking for it. Others may put up the capital to run their own staff in conjunction with the manufacturer’s factory staffing and engineers.
This all obfuscates what the cost of individual items actually are. Generally, LMDh is cheaper than LMH, given they have a spec hybrid and standardized tubs from one of 4 manufacturers, and don’t necessarily have to build every single part of the car in-house. That said, I’ve seen quotes of an LMDh car itself ranging from 4-8 million depending on the car. I think the Acuras were on the cheaper side, and Porsche was 5-6 million, I don’t remember which one was claimed to be the “pricey” LMDh option though. At Long Beach this year I got to overhear a conversation with a young fan asking a mechanic about the Valkyrie, and that one runs about 10 million, given it starts as an AMR Pro, and needs to be modified with bespoke parts from there. Given all the other LMH cars (Toyota, Peugeot, Ferrari) have bespoke batteries and chassis, but also don’t have to be modified from a pricey, exclusive, boutique production/track car, their prices could still be over that or under that. The building from scratch could make the production cost cheaper, but the battery and hybrid tech could be a massive cost balloon.
BUT!!!
We don’t know if PD will bother trying to differentiate all of this, and could just make them all a flat rate of around 3-5 million credits in-game.