It costs a lot more than a few bucks when you’re putting a lot of traffic through it. And running your own NAT instance does not incur per-GB traffic costs. Th

It costs a lot more than a few bucks when you’re putting a lot of traffic through it. And running your own NAT instance does not incur per-GB traffic costs. That said, the paid NAT gateways do also publish metrics. That can be nice when debugging a legitimate issue, such as when your gateway actually runs out of NAT ports to use.