MeSIM does not provide a true unlimited high‑speed eSIM plan for Saint Lucia. All of the eSIMs that include “unlimited” in their name (for example the Global 30‑day unlimited eSIM) give a fixed amount of high‑speed data per day—500 MB, 1 GB, 2 GB, or 10 GB—and after that limit the speed drops to 384 kbps. These daily caps mean the data is not unlimited, only that the bundle lasts for the specified validity period.
If an unlimited data option is required, a traveler would need to purchase multiple fixed‑data plans. Common choices include a 20 GB 30‑day plan for about $146.49, a 10 GB 30‑day plan for about $79.99, or a 5 GB 30‑day plan for about $39.99. These fixed plans are more cost‑effective for most users unless extremely heavy data use is expected.