Protein and supplements on a budget: what to buy and where it costs less

Compare protein powder by price per serving, not tub price

Protein tubs come in sizes from 12 servings to 10 pounds, and scoop sizes differ by brand. A low sticker price often just means a small tub. Two numbers make products comparable:

• Price per serving: the price divided by the servings listed on the label. GNC prints this on its product pages; most stores do not.
• Price per gram of protein: price per serving divided by grams of protein per serving. This matters when one scoop has 22 g and another 27 g.

An example from the GNC Pro Performance Whey 2.0 page in October 2026: the 25-serving tub cost $54.99, which GNC shows as $2.20 a serving. The label lists 25 g of protein per 30 g scoop, so the cost works out to about 8.8 cents per gram of protein. Run the same math on any tub you consider, using the sale price you would actually pay.

What protein powder cost in October 2026

These are list and sale prices read from store pages between Oct 14 and Oct 18, 2026. Prices change often, and flavors of the same product can be priced differently.

Warehouse clubs often undercut these. A September 2026 Slickdeals thread cited Costco's online price for a 5.64 lb bag of Gold Standard at about $80, roughly $14 a pound; that figure comes from a shopper comment, not from Costco.

When buying in bulk saves money, and when it does not

Larger sizes usually cost less per unit. In the table, Gold Standard drops from $22.50 a pound in the 2 lb tub to $15.80 in the 10 lb bag at the same store. But the rule has exceptions, so check each time:

• Sale timing beats size. The 30-serving Signature Whey on sale at $1.15 a serving was a better deal than paying list for many larger tubs.
• Bigger is not always cheaper. Bodybuilding.com Signature Creatine Monohydrate was $23.99 for 90 servings (about 27 cents a serving) and $53.99 for 180 servings (30 cents), so two small tubs cost less than one large one.
• Store brand is not always cheapest. The 5 lb Signature Whey worked out to $22.50 a pound, while the 5 lb Gold Standard at the same store was $17.00.

Bulk only saves money if you finish it before the best-by date and like the flavor. Return windows are short for opened food products: Bodybuilding.com accepts refund requests within 7 days of delivery for unopened items only, and Myprotein takes returns within 30 days if seals are intact. Try a small size of a new flavor before buying 5 or 10 pounds.

Store brands and what the label tells you

Most large sellers have a house brand priced below the big names: Signature at Bodybuilding.com, Pro Performance at GNC, Impact Whey at Myprotein and California Gold Nutrition at iHerb. The labels give the facts you need to compare them:

• The Myprotein Impact Whey page lists 22 g of protein per serving.
• The iHerb listing for California Gold Nutrition Sport Whey Protein Isolate, 5 lb, lists 27 g of protein per 31 g scoop and 73 servings.
• The Bodybuilding.com page for the 5 lb Signature Whey describes about 25 g per serving from a blend of whey concentrate, isolate and hydrolyzed whey.

Isolates usually cost more per serving than concentrate blends, and the label shows which one you are buying. Dietary supplements, protein powders included, are not approved by the FDA before they are sold. If that matters to you, look for third-party seals such as NSF Certified for Sport on the label. How much protein a person needs depends on body size, diet and health, so a doctor or registered dietitian is the right person to ask before adding supplements.

How to pay less at Bodybuilding.com

Bodybuilding.com moved its store to shop.bodybuilding.com and ships to 49 states and military addresses. Its standing ways to save, as listed in October 2026:

• Subscribe & Gain: 10% off each recurring delivery of products you subscribe to.
• Rewards: free with an account. You earn 5 points per $1, and 100 points take $1 off a later order, roughly 5% back in store credit.
• BBCOM Membership: a paid membership tied to the fitness app with 10% off every order, free shipping on all orders and 25% off Signature products. Worth comparing if you order Signature products often.
• Free shipping: orders over $125 of Signature and EVL products ship free.
• Deals section: marked-down protein and other products, no code needed.

PickedBox tracks the current offers on the Bodybuilding.com coupon page.

The row below is the same row as on the Bodybuilding.com page. Bodybuilding.com opens in a new tab.

10% off 10% off every Subscribe & Gain recurring delivery No code required. Applies to products set up as a recurring Subscribe & Gain delivery. Deal · Worked Oct 11, 2026 · listed since Oct 2026 Get deal Opens Bodybuilding.com in a new tab. No code needed.

Where else protein costs less

The same habits work at other supplement stores. The programs below come from each store's official pages, as summarized on the PickedBox store pages in October 2026.

Myprotein's list prices are high and its sale prices move weekly, so compare only the sale price per serving. See the Myprotein, GNC and iHerb coupon pages for current offers.

A simple plan for a cheaper protein routine

Pick one or two basics you actually use, such as a whey or plant protein and creatine monohydrate, rather than a cart of extras. Many whey labels already list naturally occurring BCAAs; the Gold Standard page lists 5.5 g per serving, for example, so a separate BCAA product adds cost without changing what the whey label lists. Work out the price per serving for two or three options, buy the size you will finish, and set up a subscription only on the product you reorder every month. Food still covers most protein for most people, and powder is a convenience, not a requirement.

How we checked this

Between Oct 14 and Oct 18, 2026, PickedBox read product prices and labels on shop.bodybuilding.com (product listing data for Signature, Optimum Nutrition and creatine products), the GNC Pro Performance Whey 2.0 page, the Myprotein Impact Whey page and the iHerb California Gold Nutrition listing, plus Bodybuilding.com's rewards, membership, shipping and refund pages. Myprotein and iHerb prices did not load in a readable form, so only label data is given for them. The Costco figure comes from a shopper comment on Slickdeals. Per-serving and per-pound costs are simple division of the listed price. Nothing in this guide reflects a purchase or use by PickedBox.

• Bodybuilding.com store
• Bodybuilding.com Signature Whey, 30 servings
• Bodybuilding.com Signature Whey, 5 lb
• Optimum Nutrition Gold Standard Whey at Bodybuilding.com
• Bodybuilding.com Signature Creatine Monohydrate
• Bodybuilding.com Rewards
• BBCOM Membership
• Bodybuilding.com refund policy
• GNC Pro Performance Whey 2.0
• Myprotein Impact Whey Protein
• iHerb California Gold Nutrition Sport Whey Protein Isolate
• FDA: dietary supplements
• NSF Certified for Sport
• Slickdeals: Gold Standard 5 lb thread

How we test codes and what the labels mean: How we verify coupons.