I'm a bit late on this thread but I absolutely love Reala too! I also use a Nikon coolscan V ED which is a fantastic 35mm scanner (but unfortunately the price reflects this).
as for sourcing film 7DAYSHOP still has the best deal going 20 pack for £7.99! (that's only 40p a film) they are out of date but that's not likely to have much affect on 100ISO negative film. the rolls I've had developed so far have been perfect (and the rest I keep in the fridge/freezer till I need them).
In fact I'm thinking of ordering some more seen as its still in stock and I've made a fair hole in the first box!