Oh I see... yeah, WA never went direct unless it was zero cost to us, so I don't know what carriers tend to charge. Managing payment to a foreign telecom would be challenging, managing it to enough carriers so the difference in cost is meaningful would be a major endeavor. SMS aggregation is a business with many providers and a low barrier to entry, so while there are margins, I don't think they're very high. There are some telecom groups that run networks in many countries, and some of those offer SMS aggregation services, and the prices were in the same ballpark as pure aggregators, as I recall, but it's been many years since I saw the price sheets.