Jetstar classic reward unusual pricing

[Bolt]

I noticed an anomaly when checking Jetstar classic reward availalability on the QANTAS web site. Although a Jetstar classic reward between Denpasar and Sydey should only cost 18000 points one-way. But if you look at DPS-SYD direct for the 21st of November, it is 20300 points one-way.

Also, I noticed a difference in the carrier fees and taxes comparing one direction to another. SYD-DPS is $35 carrier charges + $93 taxes, whereas DPS-SYD is $60 carrier charges + $32 taxes.

I took a screenshot to verify. Then I went to select the departing flight, and now it appears to have changed. But this shouldn't be the case. The points cost, carrier charges, and taxes are the same regardless of one-way vs return. Is this a bug? Are they testing to see if one might pay a higher price point than promised? Or something else entirely?

 

[Bolt]

I'll give you another one. DRW-DPS is a 1096 mile trip, which means it should cost 9600 points on Jetstar one-way. But instead it's showing up at 8000 points. Not that it's any bargain considering the fees associated with the booking.

Is this just the most buggy web site ever?