The book component of this pack is pretty good for new players, there are plenty of puzzles to get your mind around, and a specimen game which you might want to hold off reading until you've played a few games.
The `stones' are plastic - about the right diameter but a little thin - but they're what I'd expect at this price.
The board is double-sided, 9x9 on the reverse, 19x19 on the top. The 9x9 board is useful for quick games, life/death puzzles, and teaching, but you won't use it much after the first 10 games I wouldn't think.
The major problem with this set is that the 19x19 board has the lines slightly too close for comfortable playing. There isn't a lot in it - but you'll find a blob of blu-tac pretty much essential for removing dead groups because the stones are so light they'll knock off position at the slightest touch.
The fold down the middle of the board is visually annoying - but more importantly it makes the middle row slightly thinner than the rest - so you can't actually fit 19 stones across the board.
In short - if you want a set to give to someone who you aren't sure will get into go, this is probably a good pack. If you want a set to travel with, this is OK if you can live with the restricted space. If you know the game, and want to get a set for your home and a book to improve your game - buy this (or another) book, but get at least a wooden board with glass stones.
The rating really depends on what you're trying to get out of it, but 2 to 2.5 out of 5 seems fair overall...