I’m afraid I don’t know how many for sure. At a guess (and this is purely guessing from how quickly they get sold out at popular releases), I’d say that each store branch gets around 15 - 30 of each colourway/style to sell in initial reserves. It’s very difficult to say though since I reckon they probably decrease or increase the amount depending on how popular they estimate it will be.

As for me, I can reserve one of each colourway and/or style. So, for example, I can reserve one ivory JSK and one black JSK of the same shape, or I can reserve one ivory JSK I and one ivory JSK II. Occasionally, I can employ a friend’s help if something is in great demand (though they don’t work as a service so their time is not guaranteed). :)