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Protein Isolate
Whey isolate · 4.5kg · tracked across 3 retailers, refreshed daily.
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Overview
Rule 1 Protein Isolate is a whey isolate that SuppSaver compares across 2 Australian retailers. The best price we're currently tracking is $379.99 at Supplement Mania, which works out to $9.74/100g protein — the true-cost figure we rank every whey protein on. That comes to roughly $2.44 per serve. At 86% protein by weight, the cost per 100g of actual protein — not just powder — is what decides whether it's good value.
Retailer prices shift week to week, so we re-check every listing daily and rank by true cost per 100g of protein rather than sticker price. That lets you see whether Protein Isolate is genuinely the cheapest whey protein on the market or simply discounted right now. It's listed in 4.5kg, 2.3kg and 900g. Use the price history, the per-store breakdown and the alternatives below to confirm you're getting the best deal before you buy.
Price history
-4.9% 30d2 stores carry this
cheapest firstCheaper alternatives
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About
Rule 1 Protein Isolate is a premium supplement crafted from super-pure 100 percent whey isolate and fast-acting whey hydrolysate. This formula eliminates whey concentrates, creamers, and fillers to achieve an industry leading protein purity percentage of up to 87 percent. Each 100 gram serving delivers 86 grams of protein and 345 calories. It is the ideal choice for athletes and fitness enthusiasts seeking a clean, high-quality protein source without unnecessary additives.