Just you or your country. They are available in the US at newegg and amazon. What country you trying to buy one in?
oh wait i see, no RGB, they got the red colored ones though.
My best guess is they don't make the blues in large batches due to popularity of the switch. Blues usually aren't very desirable. You may want to contact them directly and let them know everyone is out of stock of the RGB blue switch version and see if you can purchase one directly (assuming they do that, no idea tbh).