Each makeup item in the kit is numbered to correspond with the tips in the leaflet. I'll be honest though, the real reason I love this kit is simply that it contains all of my favourite products and means that I can easily use them together, even when I'm on the go.
At £25.50 I think that the convenience of this kit makes it very worth the investment. At first the bottles look fairly small but even after using them almost daily for several months now, there is still plenty left. Everyone knows that the quality of Benefit makeup is high and a favourite of a lot of makeup junkies like me so all in all, a great quality, very functionable, fairly reasonably priced kit that would make a great gift as well :)