The cheaper end of the club market is fantastic for the casual or "work do" golfer who plays a handful of rounds a year and not to any standard.
Any club golfer with regular practice will soon realise the deficiencies and require a more suitable game improvement set. In time you will move on to other club types as your striking improves.
I see nothing wrong with these "£9" per club sets as they have a market and its a good way of getting into this fantastic game cheaply! As I said before though, you will soon realise the deficiencies of the clubs (and associated balls) once you start finding the middle of the face or try someone elses clubs.
Additionally the woods/wedges always seem to be of lower quality compared to the more expensive counterparts
