
With 14 participants, you pay 65,000 gas (shown as triangle in the chart). The cost of bridge equals the cost of an ERC20 transfer!
With 19 participants, you pay 60,000 gas (shown as square in the chart)
With 60 participants, you pay 50,000 gas (shown as circle in the chart)
With 778 (max) participants, you pay: 45,000 gas. Which is max allowed (CCIP limitations)