I know its only been out for a month but if you're on the hunt, this is the lowest price that I've seen this set. Reviews are excellent, 659 pieces with a generous 5 minifigures. http://brickset.com/article/23688/review-75155-rebel-u-wing-fighter.
Its quite a big set with a massive wingspan of 65cm and length of 44cm.
RRP is £69.99, Amazon have it for around £65. A good saving of £14.02.