gosimless does not provide an unlimited‑data eSIM plan for Belgium. All of its Belgian‑specific plans listed in the data table have a fixed data cap of 50GB, with validity periods that range from 31 days to 180 days.
For example, the “Belgium 50GB – 180 Days” plan is priced at $29.49 USD and offers coverage only in Belgium. Another option is the “Europe 50GB – 180 Days” plan, priced at $91.49 USD, which includes Belgium plus 40 other countries. Because these are fixed data plans, they may be more cost‑effective for most travelers unless the user needs an extremely high amount of data.