I'm with HT and m3b here - Ryanair have always branded themselves as a dirt cheap bus service who will try and squeeze every extra penny out of their "customers" if they can. I always expect some ghastly new charge to have turned up when I fly them..
BUT they are cheap, they are safe, they do fly to/from places no-one else does and TBH you get a pretty decent flight normally - it isn't as if they fly LHR - Perth non-stop
TBH they compare very favourably with Cross-Country or Virgin trains - where you can pay a fortune and get no seat at all on a 4 -5 hr long trip