iRoamly does not provide any unlimited data eSIM plan for Guernsey. The available options are fixed data bundles that cap the high‑speed data at 50GB for a set validity period. For example, the 50GB plan valid for 30 days costs $47.00 USD, while the same 50GB amount is also offered for 3, 5, 7, or 10 days at higher prices. Because the data allowance is limited, travelers who need large amounts of data may find that a fixed data plan is a more cost‑effective choice unless they expect to use an exceptionally high volume of data beyond the cap.