@NeL ****
no, for the application to a 30-days touristic extension, the fee is 1900 Baht. . . . You CANNOT buy a 30-days extension on top of a 90-days Non-Imm-O Retirement Visa. You can only get the 90-days stay permit you got stamped when you entered Thailand, extended to 1 year, by fulfilling the financial requirements. You can, however, buy a single re-entry permit for 1000 Baht for the 90 days stay permit. A re-entry permit doesn't buy you any extra time - it only keeps the initial 90-days stay permit valid in case you exit and re-enter Thailand within this 90-days period