it depends if you're a credit card player or not really.
a credit card player can just buy more. but a free to play account has to actually earn those flower gems through the story missions, events so they can roll a 10+1 every couple of weeks. the wait time on stamina replenishment isn't THAT long.

I suppose it's better than spending them on raid points. That's all, though.

Originally Posted by Yoshire

the wait time on stamina replenishment isn't THAT long.

Just over 18 hours to get a full bar here. It really depends on your level whether trading 1 FG for a full bar of stamina is worth it. But that full stamina easily translates into 3 lvl 100 Manyus and a bunch of lower level manyus when used on the daily map, at least for me. And that's a way better deal than the 1 Manyu for 3 FG that the shop has on offer. I'm actually tempted now to use an FG to do some additional card farming on the event map! 80 stamina map = 1.6 Manyu, while the SG is worth 3 manyus. So spending one FG on stamina currently yields at least 6.4 manyus for me. But, you need a high level (and thus have high maximum stamina) to do that.

Once you get at a high level, and you're mostly settled on your unit setup, the value of FGs shifts quite a bit. You might want to save up for some waifu you really want, but otherwise, it's really a matter of X amount of Manyus vs a fifth of the cost of yet another bronze pull.