One of the things that is great about living in Penang is that there is the opportunity to “try it out” first with a Tourist Visa or a Tourist Pass. It isn’t called a Visa on Arrival but in essence it is one. This is a visa that you can get right at the airport after you land, without having had to apply for it in your home country before you left. Officially the Visa on Arrival program was discontinued in 2010.
Not every country is eligible for the Tourist Pass, but the US, Commonwealth nations, and ASEAN countries can get them.
Most folks get a 90-day pass. Occasionally, and without a discernible pattern, we have seen some people get a 30-day stamp. Both have been free.