SUPPSAVER
Protein WPI
Whey isolate · 2.2kg · tracked across 17 retailers (all sizes), refreshed daily.
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Overview
Rule 1 Protein WPI is a whey isolate that SuppSaver compares across 1 Australian retailer. The best price we're currently tracking is $189.95 at Mr Supplement, which works out to $10.36/100g protein — the true-cost figure we rank every whey protein on. That comes to roughly $2.64 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, 1.4kg, 910g, 680g and 2.2kg. Shoppers rate it 4.9 out of 5 from 68 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
+11.1% 30d1 store carries this size
cheapest firstConfirm the price at the retailer before purchasing.
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What people say
4.9(68)Customers are overwhelmingly positive about the protein powder, frequently praising its exceptional taste, smooth texture, and ease of mixing. It is highly recommended for being gentle on the stomach and suitable for those with lactose sensitivities or FODMAP requirements. While most users find it to be great value, a few minor criticisms were noted regarding its high sweetness and a perceived artificial flavor.
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.