Unfortunately, at least half will probably be rare :/ Essentially, any that have a "gold" cartel market symbol instead of silver are rare.
But bleh, I am really sick and tired of it. It's just depressing.
I know, but looking at some "gold" items (Revan's chest or Robes for example) that rarity icon seems to be more like PR thingy and not an actual rarity indicator. Something like "oh look you got a gold item which is very rare (which in fact is not rare at all), go buy more packs now, because you are very lucky today!".