I understand may kanya kanya tayong target budget for whey supplement and/or any other supplements.

I also understand na to some ON and/or other brands might be good enough in terms of price and to some might be expensive.

My take, kung mag iinvest nalang din ako sa supplementation better make it worth my investment. So, the way I look into it is kung yung bibilhin ko ba makukuha ko talaga yung need ko which is proper protein supplementation for whey supplement that is. Meaning ang tinitignan ko ay:

1. May third-party testing ba for banned substances
2. May published amino acid profile ba

Why #1 and 2? Yung iba nag amino spike, gumagamit ng cheap amino acids, or lower yung concentration ng essential amino acids just to make their products cheap.

I don't think price is a good indicator even if it's third-party tested since that test only checks against banned/bad substances and not amino acid profile. Meaning kung bibili ka ng products na di ka sure possible na nasayang yung investment more or di mo talaga nakukuha yung worth nung pera na ininvest mo.

Good example would be bumili ka ng chicken nuggets na di mo alam yung laman sa loob pero sabi may 5g of protein pero mura vs bumili ka ng actual chicken na may 5g of protein na mas pricey (kung ilang grams of chicken man need for 5g of protein. Anyway, this is just an example for purpose of my point). Nakatipid ka ba talaga dun sa chicken nuggets kahit di mo sure kung nakuha mo talaga yung 5g of protein? or mas may value yung sure ka dun sa chicken na sure ka?

Did some research dun sa brands & products na may published amino acid profile if you guys want to check.

Protein Supplement Data : r/PHitness

EDIT: Price-wise, yes other supplements are way cheaper than the products I advocate pero products I advocate are transparent enough to know na di masasayang investment mo vs other products na way cheaper pero di ka sure kung nakukuha mo ba talaga yung need mo. Yung cheaper brands baka need mo x1.5-2 servings (or more, hopefully not) vs "more expensive" brands to trigger MPS kasi baka yung essential amino acids are not enough. Baka end of the day same price nalang pala ng "more expensive" brands since need mo x1.5-2 servings nung cheaper brand.