Roger is correct, the website is very unhelpful and it does not tell you up to what dates the fare sale is for. Moreover, you have no indication where and when you can snag those fares.

However, I can tell you that they do exist as I and my wifel flew from STN (a very new airport along the lines of US architecture) to PSA for approx $60 R/T each over Thanksgiving. Boarding was great as many people did their "lemming" best by taking the first seats on the plane, leaving the emergency exit rows empty for us to get seats there. It is very egalitarian in this respect, and boarding is rather quick. However, this type of boarding is the type that only a New Yorker, like myself, might like!

Deplaning and getting your bags at PSA, was rather quick as there was not much traffic at the airport! PSA was great for Firenze, as there are direct trains from PSA to Firenze.

We were warned that you pay for every thing on the plane, so we brought our own water and food.

RyanAir are not alone in not advising you of the taxes, just look at the air fares across the pond, which give you a jolt of approx $90 when taxes are added!

However, some low cost airlines, Buzz, etc. now quote you fares with taxes included.

So, all in all, it is a good adjunct to cut costs, but with all the low cost carriers, you must do your homework. RyanAir flys to some out of the way destinations that you may actually want, and they are very good on their coverage to France and Italy, but look at the others for where and what you want to go/do in Europe!

One last thing, all the upstart suffer from the problem of finding the cheapest fares, but at least EasyJet gives you prices for the days before and after your travel date for you to compare, and their prices appear to be the same one way as for R/T (I think Buzz is the same, as well.)