Camera question

[alonewiththemoon]

I am looking for an inexpensive digital camera that can take fast pictures in low light situations.  Basically, I want to be able to take pictures of ferrets and belly dancers, both of whom wiggle around  a lot.  If it can do decent close-ups of small items that's cool too, but the action weasel and dancer shots are what I'm really interested in.  Does anybody out there have any suggestions?  I can't spend much, but if any of you camera people have old equipment you've outgrown and want to sell, I might be your buyer :)