How can I obtain a retirement visa in Thailand and what are the costs involved?

To obtain a retirement visa (known as the NON-O Visa) in Thailand, it is possible if you meet certain requirements. The initial cost is generally 2000 baht for the visa application, plus an extension fee of 1900 baht if you are applying for a yearly extension of stay. You will need to have 800,000 THB in a Thai bank account and should submit your application more than 15 days before your current visa expires. For more detailed requirements, you can refer to specific immigration websites.