I'm with MOL on this one. A washroom takes up space that could be used for 2 more seats. And there's also a cost associated with cleaning and equipping them. Of course the pax should pay. And how is it discriminatory? Everyone has to pay - or are you suggesting people with medical/special needs have no access to money? Most people can manage a short haul flight without using a washroom. If you can't - get your quid out. And if you don't like it use a full-service airline and pay hundreds of pounds to use the washroom for free. Get over it.