Getting a visa to visit Negara Brunei Darussalam costs different amounts, depending on the type of visa. Brunei Transit Visa fee is BND 5.
Also, one-time visas for Brunei cost BND 20, which is about USD 15. You must pay BND 30 or USD 22 to get a three-month visa that lets you come and go more than once. A multiple-entry visa for Brunei, which can be used for more than three months, costs BND 50, or USD 36.