ETravelSim does not offer an unlimited data eSIM for Guernsey. The available plans are fixed‑data options, such as the Heritage Europe Pass 20GB – 30 days priced at $27.00 USD and the Seafarer eSIM 20GB – 30 days priced at $29.99 USD. Both plans provide 20 GB of high‑speed data for 30 days and cover Guernsey in addition to a large number of other countries.
Choosing a fixed‑data plan is generally more cost efficient for most travelers, unless you require a very large amount of data. The listed 20 GB plans illustrate that large‑data options exist, but no unlimited data plan is currently available from ETravelSim for Guernsey.