I have always found if you play the Ryanair game you always get the best price
all my flights are booked with pre payed master card I only take 10kg of hand baggage and always get free tax flights ... some of my best deals have been -
STN-LPA-STN for £20 RTN
STN-FUE-STN for £12 RTN
STN-PMI-STN for £6 RTN
STN-CIA-STN for £6 RTN
I could go on and list many more flighs but I wont I must add that the above prices are without paying to print my boarding pass so add that on ...
I have always looked at Easyjet as well as Ryanair but always find Easyjet to be alot more than Ryanair even with both having sales on.