Yeah, most people are reporting numbers that are totally legit for the drop rate everyone's been quoting (10%). 160 dungeon runs for Zodiac. Compare that with Nexus pre-patch, which took 250 dungeon runs (no bonus - 167 with bonus). Sure, you also need a bunch of resources, but those are honestly pretty trivial compared to the cost of the Novus step, especially if you went with DET as one of your maxed stats. Zodiac isn't that bad, it's just the lack of a progress bar that has people freaking out.

Personally, I've gotten 12 of the 16 dungeon drops so far. AV took me ~15 runs, HM HM took me ~18, and SV HM took me ~6. The rest were ~1-3. Because I overlapped my Animus books for PLD with my Zodiac dungeons for BLM, a ton of my runs counted for both relics, making it feel even quicker.

I'll have my BLM Zodiac (and PLD Animus) by tomorrow night, hopefully, unless I get really unlucky like some of the posters here to make up for my overall good luck. Honestly, all the stages feel like they're taking the same amount of time for me.