They said “charging more than free” - i.e., more than $0, i.e., they’re not free. It was awkwardly worded.

They said "instead of charging more than free", which means should be free.

Please read it again.

	▲	otterley 8 hours ago \| parent [-]
		I think we’re in violent agreement, but you were ambiguous about what “cost” meant. It seems you meant “cost of providing NAT” but I interpreted it as “cost to the customer.” > Please read it again. There’s no need to be rude.