New right side gear: not worth it?

[Horobi]

It's "justifiable" because you'll likely still use them while leveling to 70, and a small bit after that, so they easily got a year worth of "life expectancy" before you get ride of them.
Justifiable to do it here and now? I'm not too sure the way materias prices drop down, there will be a smooth point to do it the cheapest. The issue is spotting when

[giantslayer]

It's "justifiable" because you'll likely still use them while leveling to 70, and a small bit after that, so they easily got a year worth of "life expectancy" before you get ride of them.
Justifiable to do it here and now? I'm not too sure the way materias prices drop down, there will be a smooth point to do it the cheapest. The issue is spotting when

There does come a point when you meet all the stat requirements to make stuff and are able to make it HQ reliably. At that point, the benefit of a dozen or two points of craftsmanship/control is negligible. When that point coincides with when you need to do really expensive melds to get those additional stats, the cost/benefit ratio looks pretty bad. I know some people keep going, but at that point I just call it good enough and stop spending my Gil.

[Bourne_Endeavor]

There does come a point when you meet all the stat requirements to make stuff and are able to make it HQ reliably. At that point, the benefit of a dozen or two points of craftsmanship/control is negligible. When that point coincides with when you need to do really expensive melds to get those additional stats, the cost/benefit ratio looks pretty bad. I know some people keep going, but at that point I just call it good enough and stop spending my Gil.

Honestly, if you're willing to pray to the RNG gods, you can get away with some rather low stats and still make 3* gear without much fuss. I've gotten away with 391 CP on the craft simulator. You just need high quality. I feel that's a better investment until Materia V prices come down a little.