What $500 can do? http://www.advancecash.com.au/blog/2008/01/18/w... It may not seem much but if you think about it, $500 can be a lifesaver during times of urgent financial need. Think about the last time that you really needed some cash and you were days away from your next payday. Let’s say that you have a credit card but assuming that it cannot be used (for one reason or another). What did you do?