All 28 listings, cheapest per oz first
| Item | Size | Price | Per oz | ||
|---|---|---|---|---|---|
| Buddha Spices Inc. Mustard Yellow (Yellow Bold Mustard seeds -23oz) 23 oz | 23 oz | $5.99 | $0.26 | Amazon → | |
| Culinary Whole Yellow Mustard Seed, 6 LB - 96 Ounce Container of Yellow Mustard Seeds, Perfect for Pickling, Rubs and Cooking 96 oz | 96 oz | $37.99 | $0.40 | Amazon → | |
| Anthony's Organic Brown Mustard Seeds, 3 lb, Gluten Free, Non GMO, Keto Friendly 48 oz | 48 oz | $22.09 | $0.46 | Amazon → | |
 | Yellow Mustard Seeds Whole - 100% Pure Natural Indian Spice - 2 LBS 32 oz | 32 oz | $16.98 | $0.53 | eBay → |
| Rani Black Mustard Seeds Whole Spice (Kali Rai) 20oz (1.25lbs) 567g PET Jar ~ All Natural | Gluten Friendly | NON-GMO |… 20 oz | 20 oz | $10.99 | $0.55 | Amazon → | |
 | Bulk 2 lb Yellow MUSTARD SEED - North American #1 Spice - Seeds w/ No Additives 32 oz | 32 oz | $18.71 | $0.58 | eBay → |
| McCormick Culinary Whole Yellow Mustard Seed, 22 oz - One 22 Ounce Container of Yellow Mustard Seeds, Perfect for Pickl… 22 oz | 22 oz | $12.93 | $0.59 | Amazon → | |
| Fresh Finest Whole Bold Yellow Mustard Seed, Kosher & Non-GMO, 550G (19.40oz) 19.4 oz | 19.4 oz | $11.99 | $0.62 | Amazon → | |
| Amazon Grocery, Yellow Mustard Seed, 3.75 Oz (Previously Happy Belly, Packaging May Vary) 3.75 oz | 3.75 oz | $2.44 | $0.65 | Amazon → | |
 | Aiva Mustard Seeds Brown 14 oz 14 oz | 14 oz | $9.99 | $0.71 | eBay → |
 | Mustard Seed Whole Brown, Culinary Spice, American Grown Bulk - 2 Pound Bag 32 oz | 32 oz | $22.99 | $0.72 | eBay → |
| Spice Profile Organic Black Mustard Seeds | 8 oz | Lab Tested 8 oz | 8 oz | $6.49 | $0.81 | Amazon → | |
| Spice Profile USDA Organic Whole Yellow Mustard Seeds, 16 oz, Lab Tested 16 oz | 16 oz | $12.99 | $0.81 | Amazon → | |
| Frontier Co-op Organic Whole Yellow Mustard Seed, 1-pound Bulk Bag, Mild Spiciness for Soup, Pickling and More Kosher 16 oz | 16 oz | $13.03 | $0.81 | Amazon → | |
 | Spicy Organic Black Mustard Seeds 16 oz | USDA Organic 16 oz | 16 oz | $13.48 | $0.84 | eBay → |
 | McCormick Culinary Whole Yellow Mustard Seed 22 oz New Sealed Exp 06/23/2027 22 oz | 22 oz | $19.99 | $0.91 | eBay → |
 | EXP DATE 12/27. frontier co-op yellow mustard seed whole certified organic 16oz 16 oz | 16 oz | $15.00 | $0.94 | eBay → |
| The Spice Way Yellow Mustard Seed 6 oz Whole Seeds for Pickling and Cooking 6 oz | 6 oz | $5.99 | $1.00 | Amazon → | |
 | Yellow Mustard Seeds Whole - 100% Pure Natural Indian Spice - 12 OZ 12 oz | 12 oz | $11.98 | $1.00 | eBay → |
| The Spice Way Brown Mustard Seeds - whole seeds, 8 oz 8 oz | 8 oz | $7.99 | $1.00 | Amazon → | |
 | Whole Yellow Mustard Seeds 22 oz Jar Kosher for Pickling Spice Rubs Dressings 22 oz | 22 oz | $22.92 | $1.04 | eBay → |
 | semilla de mostaza negra~black mustard seed -1 lb 16 oz | 16 oz | $17.64 | $1.10 | eBay → |
 | Mustard Seed 1lb Fireworks Star Cores 16 oz | 16 oz | $19.29 | $1.21 | eBay → |
 | Spicy Organic Black Mustard Seeds 8 oz | USDA Organic 8 oz | 8 oz | $9.98 | $1.25 | eBay → |
 | Fermentaholics Organic Brown Mustard Seeds, 8 oz 8 oz | 8 oz | $9.99 | $1.25 | eBay → |
| Jiva Organics Organic Black Mustard Seeds 7oz - Non-GMO, Gluten Free, Pungent & Aromatic Spice - 100% Raw & Natural 7 oz | 7 oz | $10.18 | $1.45 | Amazon → | |
 | 24 Mantra Organic Mustard Seeds Small Variant 7 oz Naturally Gluten-Free 7 oz | 7 oz | $11.18 | $1.60 | eBay → |
| McCormick Gourmet Collection Yellow Mustard Seed, Organic, Non GMO, Our Best Herbs & Spices, Pungent Flavor for Pickled… 2.12 oz | 2.12 oz | $4.52 | $2.13 | Amazon → |
Amazon per oz, by day
typical cheapest, per oz
eBay per oz, by day
typical cheapest, per oz
Amazon as of 2026-11-05 16:45:24 UTC: Amazon's own price, else its lowest new offer, before shipping and tax (via Keepa); product prices and availability are accurate as of the date/time indicated and are subject to change. eBay: new Buy It Now listings from US sellers as of 2026-11-05 UTC, item plus shipping.
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