Ah, OK, thanks, understood!
I get a lot of use out of mine, and as Nathan notes, I use the smaller punches a lot more frequently, than the largest one in this set, which is 5mm.
I bought the MicroMark set because it was cheaper than the Waldron set, though, looking at MicroMark's website, I think the price was a little less when I bought mine. That was about 15 years ago, though, so I can't be sure.
As far as bending the punches goes, no, there's no worry about it, not in the normal use on a scale modeler's bench. You'd have to use a claw hammer and an anvil, to bend the steel used to machine the punches. As it is, I used a homemade tap hammer that I crafted from a piece of 1 1/4" dowel for a head and a thinner dowel for the shaft. I later replaced it with a nylon-tipped jeweler's hammer, also from MicroMark. It has a nylon face on one side of the head, and a solid metal face on the other. The nylon head is soft enough not to mar the edge of the punch. It doesn't take much force to punch through the material, in any case.
The only drawback to my set, as I mentioned before, is that there was no label or any other markings or calibrations, to indicate the size of the punches, either on the punches or marked on the face of the die. That would have been helpful, but it doesn't really prevent using it. I recommend the set.