Hi Rowan,
It really looks like a nice and affordable set of punches. The box is also reminiscent of the Waldron set. I very frequently use my Waldron sets (Precision and Sub-miniature as well), and I was a bit surprised to see that CB Model didn't envisage (or at least I haven't noticed that) that the punches will have tendency to get lost. Some kind of "secure" storage for the punches, instead of having the bunch at one place, would also minimize the danger of loosing the punches, but also would greatly enhance your ability to pick the right one. Are the punches labeled in any way, or do they have an visible marker of their thickness?
Apart from that, it seems like a nice set of punches. Being crazy about tools myself, I will probably get one for myself.
All the best,
Entoni