Premier MINIs at $17.08, Costco collagen at $23.99, and Vitacost's Aug. 31 cutoffs (2026)

Prices were checked at 9:08 a.m. ET on Sunday, Aug. 30, 2026. The live offers worth checking first are Amazon's Premier Protein MINIs at $17.08, Costco's Vital Proteins collagen at $23.99, and Vitacost brand promotions that close Monday morning. Historical-low status is unverified for every item below.

At a glance

Retailer	Item and package	Checkout price	Reference and savings	Deadline	Price signal
Amazon	Premier Protein MINIs · 12 × 8.75 oz	$17.08 with coupon + 5% Subscribe & Save	$18.98 before the stack; $30 reference; about 43% below reference 1	Live when checked; account offers can vanish	Current comparison lead; $1.42 per shake
Costco	Vital Proteins Collagen Peptides · unflavored, 24 oz	$23.99 after $6 off	Implied $29.99 before the instant saving; about 20% off 2	Sept. 20, 2026	Official warehouse/online sale; no long-term series
Amazon	Doctor's Best Serrapeptase · 90 capsules	$29.44 with Subscribe & Save	$50 reference; $20.56 less, about 42% off 3	Live when checked; no fixed expiry shown	Community lead; no long-term series
Amazon	laapee Pilates starter set · 15 pieces	$14.99 with code `BAXWWQZT`	$29.98 before the code; $15.00 saved, about 50% off the source's sale reference; page displays $40 as the comparison price 4	Live when checked; code can disappear	Community code lead; seller is OFamily Direct
Vitacost	30% off selected brands · Vitacost, Force Factor, Rise Bar and OceanBlue	Product price varies; discount applies automatically	30% off selected-brand items; item-level price history is not shown 5	Aug. 31 at 7:00 a.m. ET	Official promotion; compare the final cart price
Vitacost	Wellness favorites · selected health products	Product price varies	Up to 70% off the collection; the ceiling does not apply to every item 6	Sept. 2 at 7:00 a.m. ET	Official collection offer; product-level history is not shown
iHerb	Groupon's U.S. iHerb coupon page · broad retailer offers	Product price varies	Page lists up to 30% off over 600 brands and `NEW20` for 20% off a first order through Dec. 31; checkout verification required 7	Offer terms vary by promotion	Secondary lead, not an item-level deal

Protein: compare the package before the percentage

Amazon's current Premier Protein MINIs listing has 12 vanilla shakes, each 8.75 ounces and 22 grams of protein. Slickdeals reports a $18.98 price, a 5% coupon, and a second 5% Subscribe & Save reduction for a final $17.08. The source also lists a $30 comparison price, which puts the final total at about $1.42 per shake and 43% below that reference. Open the deal page before assuming the same total applies to your account. The coupon is account-visible, and the page shows a 15% Subscribe & Save outcome of $15.18 for shoppers who qualify for the higher subscription tier. 1

Costco's current warehouse savings page lists Vital Proteins Collagen Peptides, unflavored, 24 ounces, at $23.99 after $6 off. The arithmetic implies a $29.99 pre-discount price and a 20% reduction. The offer carries a limit of three, and the page says the savings are valid from Aug. 24 through Sept. 20, 2026. Costco labels the price as warehouse pricing and warns that location, online, Alaska, Hawaii, Puerto Rico and Business Center pricing can vary. 2

The two products serve different shopping jobs. Premier MINIs give a directly calculated cost per drink. Costco gives the clearer retailer-backed promotion and the larger collagen package. Neither page supplies a long-term price series, so the current discount is the evidence available for this week's decision.

Vitamins and supplements: the price is real; the product fit is separate

Amazon's Doctor's Best Serrapeptase High Potency listing covers 90 vegetable capsules at $29.44 through Subscribe & Save. Slickdeals places the comparison price at $50 and reports a 42% reduction. The deal thread was posted Aug. 24 and showed a +2 score and 580 views when retrieved. The page offers no fixed expiry, so the checkout price is the deadline. 3

Serrapeptase is a supplement purchase, not a general health recommendation. Compare the ingredient, dose, and any advice from a qualified clinician with the price before starting a new product. Subscribe & Save lowers the cost, and it also creates a recurring order that you must manage after the first shipment.

Vitacost's official promotions page gives shoppers a broader comparison stop. The page lists 30% off Vitacost, Force Factor, Rise Bar and OceanBlue collections through Aug. 31 at 7:00 a.m. ET. The same page lists 15% off Healthy Origins through Sept. 14 and 20% off Zesty Paws through Sept. 21. Promotions apply automatically at checkout, remain subject to stock, and can have exclusions. 5

The 30% offers deserve the earlier check because their cutoff arrives Monday morning. Open a product page, record the regular and sale prices, and compare the final total with Costco or Amazon. A brand-level banner supplies a discount percentage; it does not supply a product-level historical low.

Fitness equipment: a cheap entry set with a code to verify

The laapee Pilates Essentials starter set contains 15 pieces and is listed by Slickdeals at $29.98 before promo code BAXWWQZT; the code cuts the total by 50% to $14.99. The page displays a $40 comparison price and free shipping with Prime or on orders of at least $35. Amazon lists OFamily Direct as the seller. 4

The set fits a low-cost trial of Pilates accessories. The deal thread had a +3 score, 640 views and no comments when retrieved. The page supplies a current code and a comparison price, while a long-term price series is absent. Check the seller, return terms, the contents of the 15-piece set, and the code's effect in the cart before paying.

iHerb and the source boundary

The official iHerb promotions page returned a security-check shell during this scan. A different route, Groupon's U.S. coupon page, currently lists up to 30% off over 600 brands, a 20% first-order offer with NEW20 through Dec. 31, and free shipping at $30 or more for the contiguous United States. Groupon also discloses that it may earn a commission. 7

Those listings are useful starting points for a cart check. The secondary page does not establish a current iHerb product price, a supplement-specific SKU, or a complete U.S. expiry for every promotion. The article therefore keeps iHerb as a labeled lead instead of ranking it beside the Costco and Amazon item prices.

Checkout order and expiry watch

Check Vitacost first on Monday. The 30% selected-brand offers end Aug. 31 at 7:00 a.m. ET. The wellness-favorites collection stays open until Sept. 2 at 7:00 a.m. ET. Vitacost says promotions apply automatically, with stock and exclusions affecting the final cart. 5
Check Amazon's eligibility before comparing totals. For Premier MINIs, clip the 5% coupon and select Subscribe & Save. For the Pilates set, enter BAXWWQZT. For Doctor's Best, confirm that the subscription price still reads $29.44. The final cart amount outranks the headline price.
Check Costco when package fit matters. Vital Proteins is $23.99 after $6 off through Sept. 20, subject to the warehouse page's location and online-price warning. 2
Treat iHerb as a verify-before-buy lead. Start with the U.S. coupon page, then confirm the product, country, shipping threshold and code at iHerb checkout. Groupon's offer terms vary across listings. 7

Several deals posted earlier in the week have already fallen out of the active list. The Walmart Ensure Max offer carried an Aug. 27 expiry, and the Amazon MuscleTech multivitamin page was marked expired when retrieved on Aug. 30. 8 9

The week's price labels stay separate: Costco supplies an official current sale; Amazon supplies current coupon and subscription comparisons; Vitacost supplies brand and collection discounts; Groupon supplies a secondary iHerb lead. A verified all-time low remains unestablished for every item in this scan.