Funny, I was thinking about this the other day too. The Star Wars topper is more expensive than a PS5 will likely be, and is far less complex. It's definitely interesting the kind of things people in this hobby will drop big bucks on, though that also extends to other hobbies. For instance, my video card is twice the rumored price of a PS5.
That said, I'd be shocked if the PS5 is $600, they made that mistake with the PS3 and it really set them back for a while in that generation. I'm figuring both the Xbox and PS5 will be $500. I'll probably skip out on this generation for a while since I'm primarily a PC gamer anyway, and hardly use my xbone or ps4 as it is.