NHL Gamecenter Live is $50 for the (half) season this year. Here is the link- http://gamecenterlive.nhl.com/
There are a few downsides to the service, but this is a discount to the normal season rate.
1. Local and national games are blacked-out. This includes local FSN/Comcast, NBCSN, and NHL Network games. Therefore, you won't be able to get all Wings games unless you have these channels. The Wings are on NBCSN ~10 times and NHL-N ~10 times throughout the season.
2. In the US (and likely Canada) the playoffs are not shown on Gamecenter. This is because all games are shown on cable.
Gamecenter determines your location based on your IP address. Therefore, blackouts will depend on your (internet) location on a given day.