There is one DVD of Octonauts, which contains eight episodes. Another DVD is due next month containing another eight episodes. This will mean that 31% of this programme is available to buy.
There are eight Timmy Time DVDs totalling around 65 episodes. This means that around 83% of this programme is available to buy.
To my knowledge, the BBC have aired 100% of both these series.
A very quick look on popular, er, file distribution sites reveals about 50 episodes of Octonauts (96%), and I think every episode of Timmy Time (100%).
I want to buy stuff, and it isn’t even possible; yet it is available for free if I download it illegally. It’s been, what, five years now? Have we really not moved on?