You're right, euro, £45 is very reasonable, although it doesn't include accommodation (well, a campsite) like the big field festivals. I think I was massively spoilt in 2010 - the line-up included Surfer Blood, The Sunshine Underground, Blood Red Shoes, The Joy Formidable, Warpaint, Groove Armada, The Cribs, The Ruby Suns, Ellie Goulding, Marina & The Diamonds, Band of Skulls, Wild Beasts, Broken Social Scene, Japandroids, Real Estate, Anna Calvi, Best Coast, Esben & The Witch, Everything Everything, Frankie & The Heartstrings, Goldheart Assembly, The Fiery Furnaces, The Walkmen, etc etc...
Not to mention all the unknown bands I saw who were great. I'm slowly working my way through the myspace pages for this year's bands, and the standard doesn't seem to be as high. Not to say that they're all rubbish - some are pretty good - just nothing that really stands out.