Nomad does not provide a true unlimited data eSIM for Costa Rica. The plans that carry the word “unlimited” in their name actually allow 2GB of high‑speed data per day and include a reduced speed of 1000kbps after that limit, so they have a hard cap and are not unlimited.
However, Nomad does offer fixed‑data plans with large allowances for Costa Rica. For example, the Regional Global‑EX - 365 Days - 30 GB plan gives 30GB of high‑speed data for a full year, and the Local Costa Rica - 30 Days - 20 GB plan provides 20GB over 30 days. These fixed data plans provide a cost‑effective option for most travelers.