MelbourneIT are ripoff merchants, They charge premium prices for what everyone else can have anywhere else at a fraction of the price. Probably part of the reason they just purchased TPP / Netregistry
If memory serves me correctly, they were the first .au domain registrar and continue to offer over inflated prices to dickheads who would actually pay what they are asking.
Crazy Domains charge a fair bit more than some others, but I've used them a lot and have had no issues.