tigerair is one budget airline I will search for, whether got cheaper flights. went to taipei last year and recently via tigerair. booking at their website is easy and the details of how tigerair (budget airline) charge at their website is very transparent to me already, since i book quite often. basically seating will be charged if you selected, as well as the baggage check in. taxes and fuel are already included in the cost. Look out for their promotions, can find tickets at much cheaper rate.