On the whole, the scenery tends to be accurate, minus a few minor things like Ian has mentioned, but there's absolutely no doubt that's a vast improvement over any default offering, and well worth the money for the amount of scenery you're getting.
Haven't had time to try it out yet as I've been at Flying Legends all day, but I've no doubt I'll be satisfied with my purchase! I can comment on the accuracy when I do finally give it a test, as my local airfields are included in this one (namely Leicester, Bruntingthorpe, Cottesmore, East Midlands).