The most common version 3 sim I see is the 12Gb, 30 day, $20 edition. I"m looking at it for international travel primarily. You can also get a 10Gb, 30 day, $15 for the 3 network, and near as I can tell it has the same features and roaming coverage. For me, the US usage would only be for confirmation of activation and functionality prior to a roaming trip. My intended use would be for two or more phones with included local and phone to phone calls in the covered areas. With the IMS dual (esim, 3 sim) sim setup we can hopefully keep our phones active for no fee calling to and from the US while abroad without needing WiFi connectivity.

Red Pocket is still the best backup service, but I just don't need it, and the +/- $15 a month new rates from Xfi Mobile aren't worth it to me.