How can I get only 100 Wii points?

There's a song I want to download for Rock Band. I have 100 points left but songs are 200. However, they make it so I have to buy a 1000 points at a time, but I only want one song.

Is there someone that can help me or direct me where to go to get the 100 points I need. Thanks!

 

If you live in europe, you can trade club nintendo points for wii points (4 : 1 ratio I think).

 

Thanks! But I live in the U.S!!

 

They sell 500 point cards in some stores for about five bucks. I think that's the smallest amount you can get.

 

Thanks. I'll have to look for those