Let me tell you something.Not sure if serious but iv only seen 90% extract in most epi. I could be wrong, im not oppose to being wrong. If its 100% then great.
If you ever find 100% pure ecdysterone or any form of ecdysteroid or planthormones I will give you everything I own.
Synthesizing or extracting flavanoids,alkanoids or generaly plant/herb conpounds is not cheap. Everything above 90% will be more and more expencive.
Did you maybe know that 5alpha-hydroxy-laxogenin with 98% HPLC purity is up to 3x more expencive than let say 90-95% HPLC tested?
So the conclution is, why pay so much for few extra % when you can rather use 90-95% purity. It will not only be almost the same (you dont feel any difference from 95% to 98%. Not from 90% to 98% either)and brands can sell it much cheaper too.
Good for supplement brands and good for us (consumers)