It's not $80 a month for sports, it's around $55 now (sky starter + sports).
That is true if you don't want the ability to pause and record live sport (or the other channels) in HD. IMO if you are being forced to use a decoder those features should be a given so for me it's closer to $80 but the offer at $55 I concede is pretty decent.
Reality is I'm very much a minority with what features I desire and if I want sport I need to pay $55 (and suffer some feature loss with Fan Pass) or $80 p/m. There are a few pros and cons at the moment with either option for me and therefore I chose not to watch live sport and follow them in other ways. Fan Pass pricing is so close to being where I would buy it but (for my own personal decisions) it's sill not worth it.