I see that box as one of the best marketing tools Sennelier have. I was still using Cotman halfpans when I bought it for about ten euro - I don't think you can get it so cheap any more - and that blue was a key contributer for me choosing Sennelier as my default watercolours since. I think your experience might be a little different coming from a vast experience of other paints but gor someone coming from the Cotman sketchbox, even though there are a few less pans, the little Sennelier box is a huge step forward.