First - here's 30 geek gold to go buy yourself an avatar.
Next: Any pack set will do. You will really want about 3 booster packs each to really be able to play the full game. More if you want to start to customize your fleet/ cards.
Best bet would be to 5 Below / Tuesday Morning type stores...
I'd suggest putting it on your trade 'want' list and check the BGG marketplace - both here...
Yes, it was "5 Below". We got the last one, and I checked out Tuesday Morning today per your suggestion. No luck at our location.
I'll try posting in the other sections of this site that you recommended.
Honestly, eBays the place to go to get sets.
I've even bought a shedload of German packs for the ships (which have English text on them) for penny's and just translated the cards to printouts for when they appear in play ... Walts
Walts, that is a *great* idea. I couldn't find any currently on eBay... is that where you found yours?