nextSIM does not provide a true unlimited data eSIM for Saint Lucia. Plans that carry “Unlimited” in their name actually have a hard data cap and include a reduced‑speed threshold; for example, the eSIM Saint Lucia Unlimited 1Days Standard plan is limited to 1 GB and slows to 512 kbps once that amount is used.
Travelers who need a sizable data allowance can choose one of nextSIM’s fixed plans. A common option is the eSIM Saint Lucia 20GB 30Days Standard plan, priced at $89.91, which offers 20 GB of high‑speed data for 30 days. For those willing to pay more for higher speeds, the eSIM GLOBAL 30GB 30Days Premium plan provides 30 GB at 5G for 30 days for $741.49. These fixed‑data plans may be more economical for most users than paying for very high data volumes.