Join
MaybeAn estimated 0.0% of orders come back. But the top 5 brands take 98% of clicks, so Join is a Maybe.
- Flapen Score
- 50 / 100Top 44% of 14,768 Health & Household niches · +1 vs the category median of 4950
- Market size
- $366K/yr145K searches / yr
- 90-day growth
- +15.2%search demand this quarter
- Competition
- 64%top-5 click share · 6 brands · 137 sellers
Flapen Score
Join against its category
The dotted line is the Health & Household average. Past it, Join is stronger. Inside it, weaker.
Market
The Join market on Amazon at a glance
Shoppers on Amazon United States searched for Join 145K times last year and spent an estimated $366K. The top 5 brands take 98% of clicks. Flapen scores it 50 out of 100, a Maybe.
01 · Demand
An estimated 6.3% of those searches ended in a purchase.
Shoppers searched for this 145K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 6.3% of those searches ended in a purchase. Searches in the last 90 days moved +15.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated $366K a year.
- Searches, last 12 months
- 145K
- Growth, 90 days vs prior 90
- +15.2%
- Conversion, latest week
- 6.3%
- Market size, estimated
- $366Ka year
- Top search term
- schiff glucosamine 2000mg23K searches a year
02 · Price
A sale here is worth $39.85.
Listings sell for $39.85 on average, from $12.09 to $107.86. Amazon reports units sold in ranges. This niche sold 13K to 15K a year. The average listing sells 750 to 1,000 of them. At $39.85 that is $30K to $40K a year per listing.
- Average price
- $39.85inside the $15 to $100 sweet spot
- Price range
- $12.09–$107.86
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 13K–15K
- Units per listing a year
- 750–1,000
- Revenue per listing a year
- $30K–$40K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
12% of listings pay for placement with sponsored ads. 53% ship with Prime. On an average day, 16.4% of listings are out of stock. The average listing ranks #502 within Chondroitin & Glucosamine. It carries 3,458 reviews at 4.69 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 12%
- Prime listings
- 53%
- Out of stock, average day
- 16.4%
- Average rank
- #502in Chondroitin & Glucosamine
- Average rating
- 4.69 starsAmazon United States average 4.42 stars
- Average reviews
- 3,458per listing
- Listings tracked
- 17
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 87 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 87 months
Products
Top Join products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 25, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Kirkland Extra Strength Glucosamine 1500 mg Chondroitin 1200 mg 220 Tablets
- Price
- $29.43
- Rating
- 4.7/5
- Reviews
- 5,125
- Age
- 12y ago

Kirkland Signature Glucosamine with MSM 375 Tablets
- Price
- $24.25
- Rating
- 4.7/5
- Reviews
- 2,947
- Age
- 10y ago

Schiff Glucosamine 2000mg with Vitamin D3 and Hyaluronic Acid 150 tablets - Joint Supplement
- Price
- $21.10
- Rating
- 4.6/5
- Reviews
- 80
- Age
- 11y ago

Kirkland Signature Glucosamine & Chondroitin 280 Tablets
- Price
- $28.57
- Rating
- 4.8/5
- Reviews
- 297
- Age
- 3y ago

Schiff Glucosamine 1500mg Plus MSM and Hyaluronic Acid 150 Tablets - Joint Supplement (Pack of 6)
- Price
- $96.86
- Rating
- 4.7/5
- Reviews
- 1,522
- Age
- 10y ago
Trending
estimated 90-day click momentum
Schiff Glucosamine 2000mg with Vitamin D3 and Hyaluronic Acid 150 tablets - Joint Supplement
- Price
- $21.52
- Rating
- 4.7/5
- Reviews
- 249
- Age
- 12y ago

Schiff Glucosamine 2000mg with Vitamin D3 and Hyaluronic Acid 150 tablets - Joint Supplement
- Price
- $21.10
- Rating
- 4.6/5
- Reviews
- 80
- Age
- 11y ago

Kirkland Signature Glucosamine with MSM 375 Tablets (4 Pack)
- Price
- $75.88
- Rating
- 4.5/5
- Reviews
- 22
- Age
- 11y ago

Schiff Glucosamine 1500mg Plus MSM and Hyaluronic Acid 150 Tablets - Joint Supplement (Pack of 6)
- Price
- $96.86
- Rating
- 4.7/5
- Reviews
- 1,522
- Age
- 10y ago

Schiff Glucosamine 1500mg Plus MSM 1500mg and Hyaluronic Acid 150 tablets - Joint Supplement
- Price
- $20.18
- Rating
- 4.8/5
- Reviews
- 131
- Age
- 7y ago
Newest
by launch date
Horbach Glucosamine HCL | with Hyaluronic Acid | 2000mg
- Price
- $12.09
- Rating
- 4.7/5
- Reviews
- 580
- Age
- 2y ago

Kirkland Signature Glucosamine & Chondroitin 280 Tablets
- Price
- $28.57
- Rating
- 4.8/5
- Reviews
- 297
- Age
- 3y ago

Nutricost Glucosamine 1800mg with Chondroitin & MSM 240 Tablets GMO-Free
- Price
- $21.56
- Rating
- 4.7/5
- Reviews
- 3,057
- Age
- 4y ago

Schiff Glucosamine 1500mg Plus MSM 1500mg and Hyaluronic Acid 150 tablets - Joint Supplement
- Price
- $20.18
- Rating
- 4.8/5
- Reviews
- 131
- Age
- 7y ago

Schiff Glucosamine 2000mg with Hyaluronic Acid (Pack of 4)
- Price
- $67.90
- Rating
- 4.7/5
- Reviews
- 124
- Age
- 7y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 64% of clicks. Leaders hold, but buyers still shop past them.
Brands
6 flat
Sellers
137
Est. top-5 brand share
98%
Top 20: 100%
Est. top-5 click share
64%
Top 20: 100%
Open market
0%
- KIRKLAND58%
- Schiff26%
- Costco6%
- Horbäach4%
- Vimerson Health4%
- Nutricost2%
Demand
Join search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.7× · 9 of 12 months tracked
Search terms
Top Join search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- schiff glucosamine 2000mg23K/yr
- kirkland glucosamine chondroitin25K/yr
- join17K/yr
- schiff glucosamine12K/yr
- joint inflammation supplement6K/yr
- kirkland glucosamine8K/yr
- glucosamine hcl9K/yr
- glucosamine chondroitin kirkland7K/yr
- schiff7K/yr
- kirkland glucosamine 1500 chondroitin 12007K/yr
Reviews and returns
What reviews say buyers love and hate about Join
We read the reviews and the return reasons for every product selling here.
“I started feeling ankle pain”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
18 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Join questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









