01
Lowest
$0.49
per ounce
65% below median
Carlyle Pea Protein Isolate Powder | 7lb | Unflavored | 29G Per Serving
$54.99
112.22 ounces
Price as of Oct 13, 3:29 AM ET · Details
Cheapest soy isolate per ounce
68 offers ranked · median $1.40 a ounce · checked Oct 13, 3:29 AM ET
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Ranked results
PriceCrow compares available Amazon listings for soy isolate, 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 $0.49 per ounce (65% below the median) — Carlyle Pea Protein Isolate Powder | 7lb | Unflavored | 29G Per Ser...
Price range: $0.49 – $10,862.58 per ounce across 68 offers. Median sits at $1.40.
Top brands showing: Now Sports, Bulk Supplements Com, Nutricost Soy.
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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
$0.50
per ounce
64% below median
DEAL SUPPLEMENT Unflavored Pea Protein Powder, 5lbs – Premium North American Grown Peas – Easily Digested Isolate Form – Great for Shakes, Bars, or Snacks – 27g Protein Serving, Soy Free, Vegan
$39.99
79.98 ounces
Prime
Price as of Oct 13, 3:29 AM ET · Details
03
$0.55
per ounce
61% below median
Nutricost Pea Protein Powder (4 LBS) Chocolate, Gluten-Free
$34.95
63.55 ounces
Price as of Oct 13, 3:29 AM ET · Details
04
$0.62
per ounce
56% below median
Earthborn Elements Soy Protein Powder 1 Gallon Bucket, Always Pure, Smoothies & Shakes (60.8 Ounces)
$37.99
61.27 ounces
Prime
Price as of Oct 13, 3:29 AM ET · Details
05
$0.63
per ounce
55% below median
Pure Original Ingredients, Soy Protein, 4 Lb
$40.09
63.63 ounces
Prime
Price as of Oct 13, 3:29 AM ET · Details
06
$0.66
per ounce
53% below median
Minimalist, Soy Protein, 3 Lb
$31.49
47.71 ounces
Prime
Price as of Oct 13, 3:29 AM ET · Details
07
$0.67
per ounce
52% below median
Nutricost Soy Protein Isolate Powder (Unflavored) 2LB
$24.95
37.24 ounces
Prime
Price as of Oct 13, 3:29 AM ET · Details
08
$0.69
per ounce
51% below median
Unpretentious, Soy Protein Isolate, 2 Lb
$21.99
31.87 ounces
Prime
Price as of Oct 13, 3:29 AM ET · Details
09
$0.70
per ounce
50% below median
Minimalist, Soy Protein, 1.6 Lb
$17.99
25.7 ounces
Prime
Price as of Oct 13, 3:29 AM ET · Details
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