Visitors planning to stay less than 30 days can get a Tourist visa on arrival. Or beforehand by obtaining an eVisa. Cost is $20USD either way but the eVisa adds on a $5 processing fee.

Business Visas are also available, these can be obtained even if you are not visiting on business and are valid for 3 months, they can also be extended in country. At $25USD it’s not a bad deal.