Pics just haven't been posted yet. My guess is that some of the 300 left are those ones and he didn't want to show an incomplete set.
Again, there will be extras, but I am not posting them for sale until I get all the keys and confirm that the quantities are all there. There will be about a 24 hour period where I will allow group buy participants to buy leftovers (at the leftover prices) and have them ship with their original order, but after that they'll have to come in a separate package. This is because I really don't feel like packing envelopes all day and then taking a break and opening my PM box to find out that there are 10 envelopes I have to re-pack because they added something. That window will start when I post pics of the keys in hand. (I expect the first day will all be counting and sorting with a bit of packing.) I set up the final order to him so that there was at least 1 extra of everything, including the sets, but for the sets its obviously 1-3 extra sets maximum. Thus, leftovers for the most part will be extremely limited. Even the most popular keys are only 1 of 50, with most of them being less than half that... So yeah, they're rare, and I'm not going to be doing another one of these for a long time, if ever- far too much hassle.