Brand comparison
Bulk Nutrients vs Optimum Nutrition: which is cheaper in Australia?
Today, Bulk Nutrients’s cheapest in-stock product works out to $80.82/kg of protein and Optimum Nutrition’s to $75.31/kg. We track 2 Bulk Nutrients products and 15 Optimum Nutrition products across every Australian retailer we scrape daily.
At a glance
Side-by-side
| Metric | Bulk Nutrients | Optimum Nutrition |
|---|---|---|
| Products tracked | 2 | 15 |
| Best $/kg protein | $80.82 | $75.31 |
| Avg $/kg protein | $89.81 | $109.62 |
| Retailers stocking | 1 | 5 |
| Country | Australia | United States |
| Founded | 2008 | 1986 |
FAQ
Bulk Nutrients vs Optimum Nutrition, answered.
Which is cheaper today — Bulk Nutrients or Optimum Nutrition?
On a $/kg-of-actual-protein basis, Optimum Nutrition is cheaper right now. Optimum Nutrition's cheapest in-stock product works out to $75.31/kg of protein, vs Bulk Nutrients's $80.82/kg. Prices are re-scraped daily, so the answer can change overnight.
How do you compare Bulk Nutrients and Optimum Nutrition?
We pull the best in-stock price for every product from each brand across every Australian retailer we track, then convert each to a single $/kg-of-actual-protein figure using the formula: price ÷ (size_grams × protein_percentage / 100 / 1000). That controls for protein density, so a $35 WPC at 75% protein and a $40 WPI at 90% protein are compared apples-to-apples. Full methodology on the methodology page.
Where are Bulk Nutrients and Optimum Nutrition made?
Bulk Nutrients is from Australia (founded 2008). Optimum Nutrition is from United States (founded 1986).
Where can I buy Bulk Nutrients and Optimum Nutrition in Australia?
Bulk Nutrients is currently in stock at 1 retailer we track; Optimum Nutrition is at 5. The product pages list every retailer with a current price and stock status — click through to the leaderboard for live links.