hsi.chang,
Thank you for all the great work. I would like to invite someone to take the next step of making this data easier to process. The specific suggestion I have is to provide it in normalized way - in US$ or with an easy currency converter. This helps in comparisions and in deciding where to start.
For example, it seems India, Budapest, Seoul, Canada are some of the cheaper priced starting points especially for B and F. I saw the post by Darren above for some European nations and elsewhere about Belgium and Seoul and a comment by RichLond regarding Budapest.
Hsi.chang is the data available in a spreadsheet or database format as well? That may be easier to process. I have access to huge web development talent and maybe I can ask one of my web teams to whip up a live converter based on your table.