01
Lowest
$0.42
per ounce
72% below median
PBfit Classic Peanut Butter Powder 30 Oz, Peanut Spread with 8g Protein
$12.66
30.14 ounces
Price as of Oct 13, 2:33 AM ET · Details
Cheapest protein powder per ounce
68 offers ranked · median $1.48 a ounce · checked Oct 13, 2:33 AM ET
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Ranked results
PriceCrow compares available Amazon listings for protein powder, converts compatible package sizes to price per ounce, and sorts the results from lowest unit cost upward. This comparison uses current or recently cached Amazon data and may not include every listing, coupon, shipping charge, or Prime offer.
What is the lowest current price per ounce?
The lowest recorded result is $0.42 per ounce (72% below the median) — Dymatize Super Mass Gainer, 52g Protein Powder, Gourmet Vanilla, 6 ...
Price range: $0.42 – $9.93 per ounce across 68 offers. Median sits at $1.48.
Top brands showing: Optimum Nutrition, Dymatize Iso100, Muscle Milk.
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Use it as a shortlist, then confirm the product size, price, shipping, coupon terms, availability, and Prime eligibility on Amazon. Add qualifiers such as “organic,” “bulk,” or a brand name when you need a narrower result set.
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02
Lowest
$0.42
per ounce
72% below median
Dymatize Super Mass Gainer, 52g Protein Powder, Gourmet Vanilla, 6 lb | 1280 Calories, 245g Carbs, 10.7g BCAAs, Whey Protein + Casein, Amino Acids for Muscle Support, 1g Creatine, 8 Servings
$39.98
95.19 ounces
Prime
Price as of Oct 13, 2:33 AM ET · Details
03
$0.67
per ounce
55% below median
Optimum Nutrition Serious Mass Weight Gainer Protein Powder, Vanilla, 6LB
$63.99
95.51 ounces
Price as of Oct 13, 2:33 AM ET · Details
04
$0.70
per ounce
53% below median
REDCON1 MRE Whole Food Protein Powder, Cookies & Cream - Meal Replacement Made with Animal and Plant Based Protein Sources, Nutrient and Calorie Dense, 0g Added Sugar (24 Servings)
$79.99
114.27 ounces
Price as of Oct 13, 2:33 AM ET · Details
05
$0.75
per ounce
49% below median
Muscle Milk Genuine Protein Powder, Chocolate, 1.93 Pounds, 13 Servings, 32g Protein, 2g Sugar, Calcium, Vitamins A, C & D, NSF Certified for Sport, Energizing Snack, Packaging May Vary
$23.18
30.91 ounces
Prime
Price as of Oct 13, 2:33 AM ET · Details
06
$0.75
per ounce
49% below median
Muscle Milk Genuine Protein Powder, Strawberries 'N Crème, 32g Protein, 4.94 Pound
$59.29
79.05 ounces
Price as of Oct 13, 2:33 AM ET · Details
07
$0.82
per ounce
45% below median
Syntrax Trophix Ultra Sustained‑Release Protein, Chocolate Supreme, 5 lb
$65.95
80.43 ounces
Price as of Oct 13, 2:33 AM ET · Details
08
$0.83
per ounce
44% below median
Vega Essential Protein – 25g Vegan Protein Powder, Rich Chocolate for a High Protein, Zero Sugar Shake – Large Tub, 32.5oz (20 Servings)
$26.99
32.52 ounces
Price as of Oct 13, 2:33 AM ET · Details
09
$0.87
per ounce
41% below median
Muscle Milk Pro Series Protein Powder Supplement,Knockout Chocolate,2 Pound,11 Servings,50g Protein,3g Sugar,20 Vitamins & Minerals,NSF Certified for Sport,Workout Recovery,Packaging May Vary
$27.97
32.15 ounces
Prime
Price as of Oct 13, 2:33 AM ET · Details
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