Did you catch the part where there’s no expiration? With that particular offer you get 1.1GB in 100 countries for US$2 or in 153 countries for US$3, and that’s a one-time charge until you use up the data. If that’s across 5, 8, or 11 trips, no problem. And that’s just one pair of offers. There are many others.
For comparison, SIMBA includes roaming in “60+ countries,” and it looks like Eight includes roaming in 64 countries. Not 100, not 153.
I’m simply pointing out that the local plan’s bundled international roaming might not be relevant to getting the best overall deal. And that’s surely correct. For example, bundled roaming is definitely not part of the best overall deal when visiting the scores of countries that are not included in the bundled roaming allotments.
Also, you might hate the bundled roaming partner network in the country(ies) you visit. Separate eSIMs let you pick your preferred roaming network(s).
OK, but see above. And that’s you, assuming you’re visiting once of the 60-odd countries…and don’t blow through the bundled allotment either. YMMV.