When I mean worth it, I mean in terms of making money and overall usefulness for leveling up. I feel like aetherial dust drops too rarely and mythic ambrosias are too pricy for me to make some profit, or even level up effectively (without blowing tons of gold to save a few hours of grinding). Whereas perfect roe and the demand for regular ambrosias are pretty steady, and could increase come morrowind.
Although, I could be totally wrong about all of this so that's why I'm asking. I finally got my first psijic recipe so I'm debating if I should even bother waiting to upgrade it (despite knowing that I need the insanely rare cipher to do it).