I'm never too sure about Webjet as they always have these unannounced service fees that appear at the end. But I've clicked through and it still seems like a big bargain.
The advertised rates are $20-$21 from MEL/SYD/BNE to AYQ (Uluru/Alice Springs). However at the end, the service fees when I looked at a sample date added up to a total of $55.49. Which was still a great price, but it'd be nice if that was shown up front as it's not optional. This was the breakdown:
Price Breakdown
Payable Now
$ 55.39
Price Breakdown
$55.39
Flights
$20.49
Jetstar from Melbourne (Tullamarine) to Ayers Rock airfare
$20.49
1 Adult Airfare(s)
$15.49
Jetstar Taxes
$5.00
Webjet Booking Price Guarantee
$12.95
Webjet Servicing Fee
$21.95
Total Booking Price
$ 55.39
All prices are in AUD
Just a PSA before people start flaming JQ in the comments.
Just be aware that you get what you pay for, this isnt a $1250 flexible Virgin Australia fare.