I'd have to agree with the sentiment that even at MSRP, the pricing of the 5090 is not good. As a 4090 owner I would never have spent $1,600 on this card if it wasn't for AI, let alone $2,000 on a card that has an utter lack of architectural improvements and is simply faster by being bigger. Not withstanding the plethora of issues, IMO the 5090 is an inferior product to the 4090 until Nvidia gets those sorted out (and I doubt they are given some of them like the lack of current balancing and running against the connectors wattage limit require a recall of the cards). It's defective out of the box.
At the end of the day you seem to be asking us how much you are willing to pay and there's no way we could know but at the very least you seem to have answered your own question, $2,500 - $3,000 seems to be your range. If you decide to get a 5090, and I absolutely don't recommend it given Nvidia has seemingly chosen to ignore connector issues that are now severe, you must power limit the GPU significantly. Around 350w seems to be pretty good. You'll probably get around 4090 stock performance but at a lower wattage. People should be power limiting their 4090s as well.