PLP (every game + copa america this year), Fox Soccer (UCL, Internationals, NRL, A league and more), MLB (every game), NBA (every game), NFL (Every game).
Roughly $200 each, though admittedly it depends on exchange rate.
Basically means I can access better quality games, and every game (rather than just the odd game SKY decides to screen) for $200 less per year than sky offers. If I don't wish to watch a sport in a particular year, I can just not sign up, or even sign up for just half a season for half the price. I can do all of this just as easily as switching on the TV and watching it on Sky. I also no longer have to go through the ritual of going through the EPG finding what to record for the next day, its all on demand automatically - so its actually an easier experience than watching it on sky. Can also watch on demand wherever I want, rather than having to watch on tv if I happened to remember to record it.
The only annoyance is there are still gaps, test match cricket for example. To access this I would need to sign up to sky for $1200 a year at a 12 month contract. Though their new fan pass service could fill some gaps, albeit at an expensive price of $20 per week (and you have to hope that what you want to watch is on SS1-4 rather than a popup channel - plus no on demand service). If they added on demand access to their fan pass service, then it'd be ideal.
This season I only got NBA for the playoffs so only signed up for 2 months for that, but may go the full season next year depending if I feel I have time. MLB I'm thinking of dropping until the playoffs next season, and make do with the daily free game they have on their site, if I feel the need to watch the regular season. The ability to be able to choose and pay for what you want is a big plus.