I upgraded my £10 pledge to £30. I selected the DVD for £20, and added £10 for the double disc set and all digital downloads. Hopefully that will mean I get the DVD, Badge, Beer Mat and all the extras, and all the hours of content. Its the only way to make sure.
The way it is written is a bit confusing, and it took a while to sink in that I had to add £10 over the pledge bonus level for the double disc. I also didnt want to risk not getting my Boing Ball Pin Badge if I'd just chosen 'download only' for everything. Again, I'm not associated with this project, I'm just a fan.