@Steve ********
it's a minimum of 500 baht (extra to the 1900baht extension fee) to use the company that does the eVisa extensions,
you apply online, you upload your documents online, you pay online, you get a confirmation then you go to Chaengwattana on the 3rd floor to the eExtension office and they stick the extension sticker in
It's only for a limited number of reasons right now, and retirement/marriage to a thai are not available BUT you can do it for visa exempt entries or tourist visa entries
They've been running eExtensions for a good number of years now
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