Example at http://superuser.com/questions/330393/apple-mac-mini-wont-work-with-hdmi-to-vga-converter is 2011 and that was years ago.
But that's not the need to clarify issue. You could be in Toronto or Sydney so to list the cheapest world wide will be a problem.
I upgraded my mac mini dual core to an i5 and was horrified to learn that not only do I need to buy a different adapter now, but it's horribly confusing what is the cheapest way to hook up. I have two adapters and neither will seemingly do any good at all. Advice?