Roaming regulation: wholesale and retail price caps

I have been doing some thinking about the roaming regulation, and ended up pulling together some information spread across the 2007, 2009 and 2012 regulations about wholesale and retail price capping.

Just in case it should be of interest / use to anyone here:

 

(Blue: voice, Green: SMS, Yellow: Data)

 

(Blue: voice, Green: SMS, Yellow: Data)

 (Green: voice (mobile originating) retail, Blue: voice wholesale)

 

(Green: SMS retail, Blue: SMS wholesale)

 

(Green: data retail; Blue data wholesale)