oh ok.. Well, I feel that their hands are kinda tied on the pricing front. This is because they intend on selling the disc drive cart as a separate peripheral. That kinda dictates the course of everything else.
It means the console, is in effect a PS5 digital sku. This means it can't be sold for anything more than the existing digital sku. So $399. They also can't make the combination of the console and the disc drive cost more than the current PS5 physical sku. So the disc drive cant cost more than $100.
But a disc drive attachment won't cost Sony $100. Its BOM, including packaging and shipping, would probably come in at under $40. Especially when you consider that you can get a USB C external Blu-ray drive for $70 on Amazon. So Sony would be making an easy $50 profit on a $100 disc attachment for the PS5.
There is no reason for them to push the price, and there is no way they can do it without looking sus... Even at $399, they would be making something of the PS5 console, and then making a lot more off a disc drive bought.