SUPPSAVER
Protein WPI
Whey isolate · 2.3kg · tracked across 16 retailers, refreshed daily.
Get notified when this drops
Drop your email and we'll ping you the moment the price falls.
Free · No account needed · or sign in to manage alerts
Overview
Rule 1 Protein WPI is a whey isolate that SuppSaver compares across 11 Australian retailers. The best price we're currently tracking is $179.99 at Supplement Mania, which works out to $9.53/100g protein — the true-cost figure we rank every whey protein on. That comes to roughly $2.37 per serve. At 83% 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 WPI is genuinely the cheapest whey protein on the market or simply discounted right now. It's listed in 4.5kg, 2.3kg, 1.9kg, 910g, 770g and 450g. Shoppers rate it 4.9 out of 5 from 67 reviews. 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
+7.2% 30d10 stores carry this
cheapest firstCheaper alternatives
same category
More from Rule 1
All Rule 1 →
Related Whey Protein products
Compare all →
What people say
4.9(67)Customers are highly satisfied with the protein powder, frequently praising its exceptional taste, smooth texture, and ease of mixing. It is particularly well-regarded for being gentle on the stomach and suitable for those with lactose sensitivities or FODMAP requirements. While most feedback is overwhelmingly positive, a few users noted that the flavor can be overly sweet or artificial, and some mentioned the premium price point.
About
Rule 1 R1 Protein Whey Isolate is a premium supplement designed for athletes and gym enthusiasts seeking a clean and fast-digesting protein source. The formula features a powerful blend of 100 percent whey protein isolate and hydrolysed whey isolate to support muscle growth and efficient recovery. Each 100 grams provides 83.3 grams of protein and 366.7 calories. This product is ideal for individuals who need a high-quality protein boost to meet their daily nutritional requirements.