FullBars does not currently provide an unlimited data eSIM for Serbia. The plans offered for Serbia are fixed data bundles. For example, the Serbia 20GB · 30 days plan is priced at $25.40 USD and the Serbia 10GB · 30 days plan costs $16.04 USD. If you need a larger data allowance, FullBars also offers broader plans such as the Europe 50GB · 180 days bundle (50GB, 180 days, $148.45 USD). Since unlimited plans are not available, travelers who need very high data usage may benefit from these larger fixed data packages, which can be more cost‑effective unless they are extremely heavy data consumers.