Prices updated recently · 249 products tracked across 50 brands

Protein Powder Blog

In-depth guides, head-to-head price comparisons, and value picks: updated weekly from live data across 12 US retailers.

Featured Guides

The three guides our readers reference most often this month.
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Featured · Best Value

Best Value Whey Protein 2025: Full Price Comparison

We ran the numbers on 18 whey protein powders across 12 US retailers. Here is exactly where to buy each one to get the most protein per dollar: with live pricing.
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Whey Isolate

Cheapest Whey Isolate in America Right Now

WPI is premium: but the price gap between retailers is huge. We tracked the top isolates across 12 stores to find the lowest live price today.
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Plant Protein

Best Plant Protein: Price vs Value Breakdown

Plant protein costs more per gram than whey: but it does not have to break the bank. Our Value Score analysis of Orgain, Garden of Life, and Vega.
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All Articles

Every guide we have published, sorted by topic.
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Bars Value

Best Protein Bars Per Dollar 2026

30 protein bars ranked by cost per gram of protein. Pure Protein, Clif Builders, Quest and Built compared with live US prices.
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RTD Shakes

Cheapest RTD Protein Shakes 2026

Premier vs Fairlife vs Muscle Milk Pro vs OWYN compared on cost per 30g of protein. The Costco math is surprising.
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Comparison

Protein Bar vs Shake

A Quest Bar and a Premier shake both deliver high protein. Five-factor framework for picking the right one for the moment.
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Plant-Based

Plant-Based Bars & Shakes 2026

GoMacro, Aloha, No Cow, OWYN and Vega: ranked by value, sourcing and amino acid profile. The price gap with whey is narrowing.
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Best Value

Best Value Whey Protein 2025

Every popular whey powder ranked by grams of protein per dollar: with live US prices.
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Whey Isolate

Cheapest Whey Isolate 2025

Premium WPI without the premium price tag: the lowest live prices on ISO100, Ghost, and more.
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Plant Protein

Best Plant Protein 2025

Orgain, Garden of Life, Vega and more: ranked by Value Score so plant eaters can stop overpaying.
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Value Guide

Price Per Gram Guide

The sticker price tells you nothing. Here is the only number that matters when comparing protein powders.
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Best Value

Best for the Money 2025

After tracking 28,000+ prices, the top Value Score winners are not always the brands you would expect.
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Brand Compare

MyProtein vs Optimum Nutrition

Two of the biggest names in protein go head-to-head on price, protein content, and Value Score.
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Budget

Cheapest USA 2025

Not cheapest by sticker: cheapest per gram of protein. Live data from Walmart, iHerb, GNC, and 9 more.
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Budget

Under $30 Picks

Tight budget? These are the only protein powders worth buying under thirty dollars right now.
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Comparison

Powder vs Bars

Powder is cheaper per gram: but how much cheaper? We did the math across 40 popular products.
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Brand Picks

Grass-Fed Whey

Pasture-raised, hormone-free, third-party tested: and where to find it at the lowest price today.
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Casein

Casein Best Value

Slow-digesting nighttime protein, ranked by Value Score. ON Gold Standard vs the budget contenders.
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Flavor

Best Tasting

Mixability, sweetness, and chocolate-versus-vanilla: the powders that actually taste good without breaking the bank.
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Retailers

Walmart vs Amazon

Two retail giants, one question: which one actually has lower protein prices? We compared 60 SKUs head-to-head.
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New guide every Monday. Each post is generated from live price data: just the numbers, no fluff.