No, eSIM‑On Shop does not provide an unlimited data eSIM for Spain. All plans listed for Spain have a fixed data cap, such as 10GB, 20GB, 5GB, and 50GB, with validity periods of 30 or 180 days. Travelers who need a larger amount of data can choose from the available fixed‑data plans. For example, a 50GB plan is available for 30 days at $42.50 USD and for 180 days at $55.00 USD; these options offer high data allowances and can be more cost‑effective than purchasing a pay‑as‑you‑go credit unless the user is an extremely heavy data consumer.