Based on the picture, it looks like each node has 2 10GbE ports. Not sure why you want 2.5GbE ports in addition to that. If you can afford $1200 for two mesh routers, you should be connecting to the 10GbE port to a 10GbE switch with all the ports you need. The overwhelming majority for consumers electronics (consoles, TV's, streaming boxes, etc.) have nothing better than 1 GbE ports on them, which is what you would connect to the other ports on these nodes.
That said, $1200 is a truly absurd price for a consumer targeted 2 node mesh system. People complain about GPU price increases, but networking gear prices have seen far more significant prices increases with less benefits to the consumer.