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Powder is far cheaper per serve. The whey powders we stock start around $2.31 a serve, while ready-to-drink protein runs about $5.83 to $9.00 a serve for 17 to 40g of protein. You pay the premium for grab-and-go convenience and no shaker. If cost per gram of protein matters most, powder wins every time.
Ready-to-drink protein and powder do the same job in the end, but the cost per serve is not close. Here is the real gap using live prices from what we stock, so you can decide when the convenience of an RTD is worth paying for. Prices are as at 12 July 2026.
The cost gap in numbers
A whey powder serve costs between about $2.31 and $5.50 depending on whether you buy a blend or an isolate. A ready-to-drink protein serve costs between about $5.83 and $9.00. Even the cheapest RTD is more than double the cheapest powder for a similar or smaller amount of protein.
| Format | Example | Protein | $/serve |
|---|---|---|---|
| Powder | MusclePharm Combat 100% Whey | 25g | $2.31 |
| Powder | Dymatize Iso 100 (isolate) | 25g | $3.51 |
| RTD | Nexus Super Protein (sparkling) | 17g | $5.83 |
| RTD | Grenade Protein RTD | 26g | $6.88 |
| RTD | MusclePharm Combat Ready RTD | 40g | $8.33 |
What the premium buys you
The extra cost is convenience, plain and simple. An RTD is already mixed, already cold if you keep it in the fridge, and needs no scoop, no shaker and no cleanup. You crack it and drink it. For some situations that is genuinely worth it, and for daily use at home it usually is not.
When an RTD wins
Reach for a ready-to-drink protein when you are travelling, at work with no kitchen, or heading out of the gym without a shaker. A single can is also a low-commitment way to try a brand before buying a whole tub. The RTD protein range covers Grenade at 26g a can, the higher-protein MusclePharm Combat Ready at 40g, and lighter sparkling options from Nexus at 17g. If you want the most protein per can, the 40g options lead.
When powder wins
For everyday protein at home, powder wins on cost every time. At $2.31 a serve, MusclePharm Combat costs less than half of the cheapest RTD, and a lean isolate like Dymatize Iso 100 is still about $3.51 a serve. Over a month of daily shakes the difference adds up fast. If you are buying protein as a staple rather than a treat, buy the tub.
Protein per dollar, the real math
Cost per serve only tells half the story, because the serves carry different amounts of protein. Line them up by protein instead. A $2.31 powder serve gives 25g, which is about 9 cents per gram of protein. A $6.88 Grenade RTD gives 26g, or about 26 cents per gram. A 40g MusclePharm Combat Ready RTD at $8.33 works out near 21 cents per gram. However you slice it, powder is roughly two to three times cheaper per gram of protein than an RTD. The convenience is real, but so is the markup.
What about sugar and calories?
It varies by product, so read the can. Some RTDs are built lean, close to a whey isolate, while others carry more sugar and calories to improve the taste of a shelf-stable drink. A lean whey powder mixed with water is usually the lower-sugar, lower-calorie option overall. If you are watching either number, check the panel on the can the same way you would check a tub, and compare it against the powder you would otherwise use.
The simple rule
Use powder as your daily driver and keep a few RTDs on hand for the days you cannot mix a shake. That way you get the low cost per serve most of the time and the convenience when you actually need it. To compare every powder and RTD we stock in one place, with protein per serve and price per serve side by side, see the full protein comparison. Not sure which powder to start with? The best whey guide ranks them by value.
Grab a case of ready-to-drink from the RTD protein collection, or stock up on a tub from the whey protein range.
