When a village contains two villagers with the same trade, the one you don't trade with should lower their price for that trade

Let's say, you have two villagers: a librarian and a cartographer, both giving 1 emerald for 24 paper. If you only give paper to the librarian, the cartographer should lower how much they're asking for. This would add realism, since in real life if you're selling something and another person selling that same thing with the same price is getting more money, you would make it cheaper.