I don't think $600 - $650 is very likely considering you can't even get a Steam Deck for that price anymore, and that's surely a much cheaper device. Personally I think with the Steam Deck at $800 - $950 this more powerful machine must be around $1500.
I don't think its success is a given anymore because it's clearly not going to be a "bargain" which is what many people expected, and the people who can casually overspend on this probably already have a much better computer.
I’d go a step further they aren’t doing numbers like the PS5 so the cost per unit will be higher. I’m thinking more like 2K
Yeah there's, unfortunately, no way this lands under $1,000. I'd expect to see it land at pre-built gaming PC prices. Like you said, between $1500 (generous) and $2,000 is what I'd expect. 16GB DDR5, 8GB VRAM, and 2TB SSD today is nearly a 2,000 dollar machine from regular OEMs.