Someone linked a video with rough estimates of chip cost of 5090, BOM etc. The GPU chip itself is about $350 for working and tested one, memory about $320, VRM and cooler about $150 together, board another $100, plus bunch of other components. Total BOM is estimated to go over $1100, plus packaging, distribution, R&D cost, NVIDIA margin, etc. and 5090 is not looking that very expensive anymore. It's mostly a cost of newest memory and large GPU chip, complex cooler and board. 5080 is MUCH cheaper (half the memory, less complex board, less components on it, considerably smaller GPU etc.). Like 4090 before, 5090 seems to be relatively sensibly priced considering how much it cost to design and produce, but all cards below look much worse in that regard. 6000 series will for sure be even more complex and more expensive to design and produce, hence there's no way it will be any cheaper, on the 6090 at least.