Question about DVDs

I bought one that said CNNNN on it, but it seems to be a best of collection, as it only has 5 episodes (Lunchgate, Cadman for PM, Shush for Bush, Animal Farm and Packer Health Crisis) and a couple of extras like all the Fungrys, Esteem, Firth Factor, etc. stuff. Are the other 14 episodes available on DVD anywhere or not?