As long as you don't think you're paying for customer service, food, entertainment, luggage transport or comfort, you'll get what you paid for!

We flew Perth to London with Air Asia, and while we paid a little less overall that the next price up, the standard on all of the above were so low we wouldn't do it again. Biggest problems were seat width (the tightest I'd ever flown with, even for short haul) which meant my partners shoulders crowded into my seat by a quarter of it's width, and the entertainment - you pay separately for hand held units for each leg, and the unit had a total of 7 films, 3 of which we'd seen before, and this was meant to entertain us over 40 hours of flight time, as the selection only changed every 2 months, and so we had the same ones on the way back 5 weeks later. Oh, but it wasn't 40 hours, because we weren't given the units until over 5 hours into the long leg on the way there. I didn't notice when we got them on the way back, because we'd seen all the movies by then anyway

The meals were also disappointing, you pay extra for these, and choose between vegetarian, western and asian option for each meal. I chose asian for each one, and got exactly the same mildly unappetizing dish of nasi goreng for 3 out of the 4 meals we had in each direction.

When we transferred at KL from one flight to the next, and hour and a half of the transfer time was taken up standing in queue just inside the airport doors from the runway, waiting to be checked off a list. No toilets, no availability of food or water, nowhere to sit. This was an Air Asia formality, not a KL airport process.

Once we'd paid for hold baggage for each leg, for the entertainment for each leg, and for meals for each leg, the savings were not worth the discomforts. If you're flying shorthaul (within Asia, or possible even a single leg from Australia to Asia, it MIGHT be worth it. For you. We just won't use them again.