No entry fee, although you’ll want to sit down in one of the many bars that occupy the street as there’s no exact time the bats will appear and it can take about 45 minutes for them all to leave. So the cost of a drink is about all you’ll have to pay to see the bats from a comfortable place.
The mountain the bat cave is located on does also have a killing cave and a temple that’s worth a visit, around $2 to see both. Definitely worth doing if you get there an hour or two before the bats are due to appear but you don’t need to do that to see the bats. Hope this helps.
No entry fee for bat cave.
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