If the BBC want to demonstrate value for money, they should put a lot of older shows on iPlayer free of charge. There is no way anyone is going to buy every single episode of EE, but I think many would want to re-watch or watch from the start. I certainly would.
Obviously the episode count is high, but we live in a world where getting through 24 episodes of a 40 minute drama over 1 weekend is the norm. We are the box set generation, so I'm we could get through all of the episodes!
Uploading 2 episodes of EE a day from episode 1 would take around 7 and a half years to get through. The BBC isn't going anywhere, so why couldn't it? On average they do around 104 episodes a year, so they could even upload a whole years worth per month for people to work through - especially considering it only used to be on TV twice a week!