Supera link does not offer an unlimited data eSIM for Antigua and Barbuda. The plans listed by Supera link for this destination all come with a daily data cap of 2GB.
Fixed data plans are available as an alternative. For example, a 2GB/day plan can be purchased for 1 day at $8.34 USD, for 3 days at $24.87 USD, for 5 days at $41.11 USD, for 7 days at $57.07 USD, or for 10 days at $81.01 USD. These plans use the same network coverage (3G, 4G, 5G) and include eKYC and tethering. Selecting a fixed data plan can be more cost‑effective for most travelers unless a user needs unlimited data usage.