# ProteinPrice.com

> US protein powder price comparison site. We track 295 products across 50 brands at 12 retailers, checked daily. Every product ranked by Value Score (g protein per $). Methodology: /how-it-works/. Affiliate disclosure: /affiliate-disclosure/.

Last updated: 2026-05-20

## What this site is

ProteinPrice.com is a price comparison platform for protein supplements (whey, isolate, concentrate, casein, plant, mass gainers, collagen, clear whey). All prices are scraped directly from retailer sites: no self-reporting. Rankings are calculated algorithmically from price and nutrition data; there is no paid placement.

## Key facts

- 295 products, 50 brands, 12 US retailers
- Checked daily via automated scrapers
- Single ranking signal: Value Score = (protein per serving × servings per tub) ÷ best current price
- Value Score normalized to 0–100; raw g/$ shown alongside
- US-only market (prices in USD)
- Static site, no login, no paywall

## Site sections

- /                      : Homepage: top value products, search, latest deals
- /best-value/           : All products ranked by Value Score
- /brands/               : All 50 tracked brands (index)
- /retailers/            : All 12 tracked retailers (index)
- /products/             : Per-product detail pages
- /compare/              : Side-by-side product comparison tool
- /search/               : Site search
- /deals/                : Current price drops and active sales
- /sales/                : Sales calendar and seasonal promotions
- /calculator/           : Protein-per-dollar and daily-intake calculators
- /whey-protein/         : Whey protein blend prices
- /whey-isolate/         : Whey isolate (WPI) prices
- /whey-concentrate/     : Whey concentrate prices
- /casein-protein/       : Casein protein prices
- /plant-protein/        : Plant protein prices
- /mass-gainer/          : Mass gainer prices
- /collagen/             : Collagen protein prices
- /clear-whey/           : Clear whey / hydrolysate prices
- /flavor/               : Browse by flavor
- /size/                 : Browse by tub size
- /vs/                   : Head-to-head product matchups
- /for/                  : Picks by use case (beginners, cutting, bulking, etc.)
- /guides/               : Long-form buying guides
- /glossary/             : Protein terminology
- /blog/                 : Articles, analysis, and protein news
- /about/                : Site mission and team
- /how-it-works/         : Methodology, Value Score formula, scraper details
- /contact/              : Email and feedback form
- /data/                 : JSON data feeds for developers and AI (see below)

## Data feeds (open JSON)

Free, no API key, no rate limit. Updated each scrape cycle (10× daily).

- /data/                 : Landing page with curl/fetch examples and schema docs
- /data/products.json    : All 249 products with full retailer price arrays
- /data/brands.json      : All 50 brands with metadata
- /data/retailers.json   : All 12 retailers with metadata

Each JSON file has a top-level `lastUpdated` ISO-8601 timestamp and a `total*` count. See /data/ for full schema documentation. Attribution requested when redistributing.

## Brands tracked (50)

Optimum Nutrition, Dymatize, MyProtein, MuscleTech, BSN, Transparent Labs, Ghost, Isopure, Orgain, Garden of Life, Nutricost, Now Sports, Vega, Legion Athletics, Rule 1 Proteins, PEScience, Ascent, Body Fortress, Quest Nutrition, Vital Proteins, Naked Nutrition, Six Star Pro Nutrition, Cellucor, Animal, JYM Supplement Science, Ryse Supplements, Bare Performance Nutrition, KOS, Kaged, ProSupps, Klean Athlete, RSP Nutrition, Promix Nutrition, Sports Research, RXBAR, Built Bar, ONE Bar, Barebells, Pure Protein, Clif Builders, No Cow, Power Crunch, GoMacro, Aloha, think! High Protein, Premier Protein, Fairlife Core Power, Muscle Milk, OWYN, Iconic Protein.

## Retailers tracked (12)

Walmart, iHerb, GNC, Bodybuilding.com, Target, Vitacost, Muscle & Strength, Amazon, Tiger Fitness, Costco, MyProtein (direct), Transparent Labs (direct).

## Categories tracked (8)

Whey Protein Blend, Whey Isolate (WPI), Whey Concentrate, Casein, Plant Protein, Mass Gainer, Collagen, Clear Whey / Hydrolysate.

## Value Score formula

```
Value Score = (protein_per_serving_g × servings_per_container) ÷ best_current_price
```

Example: 24 g × 74 servings = 1,776 g ÷ $54.99 = 32.3 g protein per dollar.

The lowest in-stock retailer price is always used. Out-of-stock retailers do not affect the score. Scores are normalized 0–100 for display; the raw g/$ figure is always shown alongside.

## Affiliate disclosure

ProteinPrice.com earns commission on some retailer clicks (Amazon, iHerb, Bodybuilding.com, MyProtein, and others). Facts and prices are scraped directly from retailer sites and are accurate to the timestamp shown. **Rankings are data-driven by Value Score and are never editorially weighted by commission rate.** We show the cheapest option even when it earns us less. Affiliate revenue funds the scrapers and hosting: it never buys placement.

## Source of truth

The retailer's own product page is always the source of truth. If you find a price discrepancy, email hello@proteinprice.com and we will investigate.