I'm looking at ASX listed Ausatralian Government Bonds (list here) and I noticed something weird.
What's up with the wildly varying interest rates? For example, the GSBG23 has an interest rate of 5.5%, whereas the GSBG24 has only 2.75%. Why would someone buy the GSBG24? Is it a safer bond? Or is it simply cheaper and do you make your money at maturity / selling time?