Also to make more effort to make the second core set a good choice (No card should be already complete) if they want more design space why not make it so that if you need 3 of a kind, all cards are 2 or 1 of a kind in the core - so that the second purchase is much more valuable AND the core set would then have a lot more variety.
Ummm - other than the signature squads and planets (which you only need 1 of), they did this.
Second core set is a solid buy, with very minimal "extra". Third core set has a little more extra, but not much.
Based on the cardgameDB spoiler list:
188 total unique card IDS (plus tokens)
73 cards that only require 1 copy (planets, warlords, and sig squads)
115 card IDS for which the first core box does not contain a complete playest.
24 card IDS have 2-of in the core box
91 card IDS have 1-of in the core box
Buying a second core box:
73 "extra" cards (spare set of warlords and planets, although you could use the second set of planets to be able to run 2 simultaneous games)
24 extra cards from the 2-ofs (you only need 1 additional copy)
121 cards that go to completing playsets, 97 "excess" cards in a second core set.
Third core set:
97 cards that go to completing playsets
73 spare warlords and planets
48 extra cards that you already have a complete playset for (although this gives you 2 full playsets of neutrals, which may be useful if you construct more than one deck at a time. I will call these "useless" for now, but they are not really)
97 useful / 121 excess
Assuming you buy at MSRP ($39.95), the prices are as follows (please note that I am calling spare sets of planets and the secodn full playset of neutrals "useless", although there are some additional uses for them for some playgroups):
First Core set: 18.8 cents per "useful" card
Second Core set: 34.7 cents per "useful" card
Third Core set: 41.1 cents per "useful" card
Monthly pack: 26.7 cents per "useful" card.
Other than the warlords/signature squads, there is really very little waste in buying a second/third core set.
If you consider spare sets of planets useful (for being able to run extra games / someone at the tournament needs to borrow a set, etc), and you want to be able to build 2 simultaneous decks for one set and want the second playset of neutrals:
Second core: 30.5 cents per card.
Third core: 33.5 cents per card
Note that these price breakdowns also assume that all of the other content in the box (token cards, resource and wound markers, spinners, etc. have 0 cost.
Since I will be running lots of demo games, the second and third sets of planets (and the extra neutrals) are very nice to have. The 2nd core set is not much cost difference per card than monthly packs, and the third core doesn't lag much behind that either.
The 63 warlord/signature cards are really the only "wasted" card slots in the 2nd/3rd boxes.
Edited by cgrater, 23 August 2014 - 11:53 AM.