Monty eSIM does not provide an unlimited data plan for Costa Rica. All available plans for the country have a fixed data allowance, either 20GB or 10GB, and a validity of 30 days. The 20GB option is priced at $45.00 USD when combined with coverage for ten additional South American countries or $47.50 USD for Costa Rica alone, while the 10GB option costs $24.50 USD for the broader South American package or $25.50 USD for Costa Rica only.  
Choosing a fixed data plan can be more cost‑effective unless a traveler expects to use far more data than the available caps. Monty eSIM offers these alternatives as the only options for data in Costa Rica.