Brand comparison
Cellucor/C4 Energy vs Optimum Nutrition: which is cheaper in Australia?
Today, Cellucor/C4 Energy’s cheapest in-stock product works out to $73.74/kg of protein and Optimum Nutrition’s to $75.31/kg. We track 2 Cellucor/C4 Energy products and 10 Optimum Nutrition products across every Australian retailer we scrape daily.
At a glance
Side-by-side
| Metric | Cellucor/C4 Energy | Optimum Nutrition |
|---|---|---|
| Products tracked | 2 | 10 |
| Best $/kg protein | $73.74 | $75.31 |
| Avg $/kg protein | $82.47 | $116.52 |
| Retailers stocking | 1 | 4 |
| Country | United States | United States |
| Founded | — | 1986 |
FAQ
Cellucor/C4 Energy vs Optimum Nutrition, answered.
Which is cheaper today — Cellucor/C4 Energy or Optimum Nutrition?
On a $/kg-of-actual-protein basis, Cellucor/C4 Energy is cheaper right now. Cellucor/C4 Energy's cheapest in-stock product works out to $73.74/kg of protein, vs Optimum Nutrition's $75.31/kg. Prices are re-scraped daily, so the answer can change overnight.
How do you compare Cellucor/C4 Energy 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 can I buy Cellucor/C4 Energy and Optimum Nutrition in Australia?
Cellucor/C4 Energy is currently in stock at 1 retailer we track; Optimum Nutrition is at 4. The product pages list every retailer with a current price and stock status — click through to the leaderboard for live links.