Monty eSIM does not provide an unlimited data plan for the Balkans. All of its plans for this region are capped, with the largest offering 50 GB for 365 days at $99.00 USD and other options such as 20 GB for $67.00 USD or 10 GB for $57.00 USD, each covering Albania, Bulgaria, Croatia, Montenegro, Serbia and a number of additional countries.
Choosing a fixed‑data plan can be more economical for most travelers, unless the user requires continuous, unlimited connectivity. The available 50 GB plan for a full year offers the highest data allowance and would likely be the most cost‑effective choice for heavier data users compared to the smaller, shorter‑term options.