The CE sounds somewhat disappointing. I prefer how Geeksline CEs have unique books with more content. This just seems to be extra stuff tossed into the shipping box.
Limited to just 1,000 units, we've devised a special Collector's Edition of Atari 2600/7800: a visual compendium that comes with a free bookmark, A2 2600 Blueprint poster, A2 7800 Blueprint poster and a pack of 5 postcards – each one featuring an iconic Atari game. Note that the posters come rolled in a heavy duty tube and the postcards come within a polythene bag for protection.
Great catch, as I hadn't really noticed that, as they normally offer this stuff as extras for their KS campaigns, which I normally grab, as I like the posters. So for this book, those items only seem to be offered within this set, which is fine for me, but definitely not something that should be bought for any "CE" status. As the only difference for the actual book, is the extra stuff thrown in the box as stated(no slipcase, COA, or "#" item of any kind).