@Sircastor, Thanks for your great work on the Starter Sets. I have been looking at all of them and have bought quite a few, looking for good value for Arduino Workshops etc.
I was able to connect to several suppliers in China through my good friend there and we are now repackaging and selling 3 that I thought were best and good value. . Two of these sets come with ATMEGA328 boards (Open Source Copy of Arduino Duemilanove) and are about $40 and there's one with an Arduino MEGA compatible board. We are able to offer 2 or 3 shipping options, too.
They can be seen here: http://arduino-direct.com/sunshop/index.php?l=product_list&c=6
Is your comparison still open? Any chance of including these? They are an excellent value.
For those who already have an Arduino and are looking for lots of added components, displays etc., We put together the set shown here: http://arduino-direct.com/sunshop/index.php?l=product_detail&p=109
I am actively working on putting together Starter Sets of electronics components as we have direct access to the amazing SEG electronics market in Shenzhen. Meanwhile we are selling a few prepackaged sets of components here: http://arduino-direct.com/sunshop/index.php?l=product_list&c=15
I'm not making any money on this yet, but hopes for the future!