Sling box is great! Use it to watch your home team anywhere in the world you can get an Internet signal. There are a few different sling box models. Basically the difference is the number of devices you can hook up to it and some are HD capable. I think the one that only accepts one source is enough since I only need my cable box hooked up to it. I bought mine at Best Buy a few years ago but don't remember what I paid. I want to say around $150-200. Once you buy the box there are no monthly costs. The only additional costs you may incur are $30 for the iPhone or iPad app. It will work over 3G but WiFi is obviously faster. If you use a laptop, you can use their software for free.
Go buy one, you will love it!