Don't bother.
Al that you'll get for your money is a 'dedicated' media player (based upon something which is freely available elsewhere anyway) which lets you access the internet TV channels which you can get (free of charge) anyway by going to the relevant websites (and playing the content with Windows Media Player or similar). Some of those internet TV channels will also be available (in certain parts of the world) via satellite, so the website you've seen can claim that they're 'satellite channels', even though you're really only taking a normal web feed.
Yes, you will get access to probably hundreds of channels but they're likely to be (for example):
American shopping channels ;
American evangelist channels ;
Parliamentary proceedings from obscure states with unintelligible languages ;
Chinese minor league football programmes (and similar obscure sports channels, which allow the website you've seen to state that 'sports programmes' are available, including - for example - the Archery TV channel [yes, it really exists!]).
You won't get any 'normal' sports programmes. You'll find films and entertainment programmes almost non-existent (and those which are present will almost certainly not be in English).
Don't waste your money. If you're seeking free TV over the internet, start here:
http://www.tvover.net/TVStation.aspx
That's an excellent site which will help you find your way around what's available over the internet, but you still need to remember that many broadcasters block access to their internet feeds to people outside their own country (because of rights issues). For example, people outside of the UK can't access the BBC iPlayer; similar restrictions apply if you're trying to access programmes from some overseas sites.
Chris