5-Star (5*) (Generic) Signature Stone - worth it?

5-Star (generic) sig. stones are rare items. I searched the forum and could not find how to get these and on regularly basis.
Thanks to the current offer, I can use units to buy them.

Featured Item Store (June 11-14 2019)
10 - 375 units
20 - 1,250 units
22 (max. allowed) - 1,485 units (slightly less than ½Odin).

Comparing with previous sale on Oct 1 2018

It looks like really good buy. What are your thoughts on it?

Comments

Neotwism

I wouldnt buy more than around 5 of them. That sig card deal gives u 100 stones for 50 bucks. The featured store deal just gives u 22 for 50 bucks. Most of the deals in the featured store are good but get to expensive after the first 4 or 5.

winterthur

Found a recent sale in this year on Jan 9 2019.

This has 30 generic stones and plus RNG of 8 of the needed class. Much better value except that I am ftp.

At least have a bit time to consider still.
Any additional input from community?

Eviscerator

No thank you