There wouldn't be a price in same sense. The "price" would simply be replaced with various goods and services that can be purchased for a number of sats. Just consider how fiat works. It's only worth what you can buy with it. That's true for any money. 1000 sats wouldn't be worth X dollars. You car would just cost 1000 sats to repair. It takes time for markets to work that sort of thing out. I suspect we are decades away from that and there may never be a single currency. It could be the case that we end up with multiple just like we have now.