I'm building it right now, and I think the set is a great value. If you start with price per part, and then factor in most sets with numerous parts have way too may 1x1 round tiles and so forth, you have to think this is a spectacular deal; 2352 parts (and many extras, even if little ones) comes out to closer to $0.05/piece, much better than the usual goal of around $0.10.
But if that were it, that would still just be a shrug... price per piece is just one measure. But the parts are GREAT, great colors (a lot of sand green) including a lot of 1xX bricks and a lot of tiles and other interesting elements that would typically be valued higher than that.
But still, if that were it, it might merely be interesting... but it's a great build and a beautiful looking set once it's done, very nice details. Up until now, Medieval Market Village was my favorite, this just might be better (then again, the MSRP is 50% more).
So whether you want it for the set or for the parts, I think it's a great deal... I was in the middle of building it when I saw this offer, so I bought another one.
EDIT: I got my set today and found a nice surprise; on top of the sale price and free shipping, they threw in a 5610 "builder" set.