Does ending items in cents really play a huge role in consumer decision making?

For instance, say there is a Sony Playstation for $100. Is it more attractive to the customer when the price tag is labeled $99.99? Obviously it’s a 1 cent difference and I think I would go for it.

What I want to know is, those who study business, is ending a price tag in cents really something taught as a strategy to bring in more income?

Are there certain numbers in the cents column that catch the eye more? Like ending it with .49 vs .50? Or is .50 usually a good enough indication that we are going to save a half a dollar.

*Sorry my example is in USD feel free to apply the general idea to your currency and insert opinion!