spring valley calcium 600 mg
Skip itBrand-locked demand (top 5 brands take 93% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Incredible13.6%search→purchase rate — share of searches ending in a sale
Avg price
Great$22.12avg listing price — sweet spot $15–$100
Price range
Great$9.89–$32.62cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Okay64%top-5 click share — leaders hold, buyers still browse
Growth
Okay+7.9%90-day search growth — must beat 0% to launch
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Bad4,073.5avg incumbent reviews — the moat a new listing must climb
Market size
Bad$80K$80K/yr · 27K searches
Brand share
Bad93%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, spring valley calcium 600 mg is a $80K/yr Amazon United States market (27K searches/yr). The top 5 brands hold 93% of demand. Verdict: Skip it — 48/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
spring valley calcium 600 mg market data
- Units sold / yr
- 4K–5K
- avg 250–500/product
- Revenue / yr
- $88K–$111K
- units × avg price
- Conversion rate
- 13.6%
- Avg BSR
- #571
- Page quality
- 0%
- Prime
- 55%
- Sponsored
- 85%
- Out of stock
- 2.9%
- Avg brand age
- 78 months
- Avg seller age
- 147 days
Competition & brand share
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.Brands
8 rising
Sellers
83
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
64%
Top 20: 100%
Open market
4%
- Generic43%
- GoodDealsHouse19%
- STS Home17%
- Unique Bundle Store8%
- Nature's Bounty7%
- KP+3%
- Open — no brand owns it (2 brands, 4%)
Demand & seasonality
Weekly Amazon search volume, last 103 weeks — +7.9% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.2×
Top spring valley calcium 600 mg products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 20 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Spring - Valley Calcium 600 mg + Vitamin D 20 mcg - 500 Count with Weekly Pill Organizer GoodDealsHouse - Bone Health Dietary Supplement Tablets
GoodDealsHouse$30.114.4★32 rev
Spring - Valley Calcium 600mg Natural Bone Health Calcium - 100 Tablets Pack of 3
Generic$30.904.7★237 rev
Calcium Plus Vitamin D Tablets Dietary Supplement by Spring - Valley Bone Health VIT D3 20 mcg 600 mg 250 Count.
Generic$21.884.4★27 rev
Spring Valley Calcium 600 mg 100 Tablets | Calcium Supplement 600 mg | Calcium Supplement + STS Sticker.
STS Home$15.874.6★71 rev
Calcium Plus Vitamin D3 150 Mini Softgels | Calcium Supplement | softgels | Calcium 600 mg with Vitamin d3 | Calcium Carbonate 600 mg 150 Mini Softgels
Generic$23.794.4★20 rev
Newest
by launch date
Calcium Supplement for Women and Men 600 mg Calcium with Vitamin D3 Essential Bone Health Support 500 Tablets Per Bottle for Over 8 Months (250 Days) of Supply (Pack of 1)
Unique Bundle Store$24.5212 rev
Spring - Valley Calcium 600 mg + Vitamin D 20 mcg - 500 Count with Weekly Pill Organizer GoodDealsHouse - Bone Health Dietary Supplement Tablets
GoodDealsHouse$30.1132 rev
Spring Valley Calcium 500 mg Plus Vitamin D 25 mcg Bone Health Dietary Supplement Gummies 100 Count + DRI Store Sticker.
Generic$25.7842 rev
Natures Wonder Calcium 600mg + Vitamin D3 20mcg Bone Health 220 Tablets
Nature's Wonder$9.89677 rev
Spring Valley Calcium 600 mg 100 Tablets | Calcium Supplement 600 mg | Calcium Supplement + STS Sticker.
STS Home$15.8771 rev
Trending
90-day click momentum
Calcium Citrate 600mg 300 Tablets per Bottle Bone & Joint Health (Pack of 1)
Generic$24.853.0★
Calcium Supplement for Women and Men 600 mg Calcium with Vitamin D3 Essential Bone Health Support 500 Tablets Per Bottle for Over 8 Months (250 Days) of Supply (Pack of 1)
Unique Bundle Store$24.525.0★
Calcium Plus Vitamin D3 150 Mini Softgels | Calcium Supplement | softgels | Calcium 600 mg with Vitamin d3 | Calcium Carbonate 600 mg 150 Mini Softgels
Generic$23.794.4★
Calcium 600 mg 100 Tablets Dietary Supplement Bone Health Calcium (Pack of 3)
Generic$32.624.2★
Natures Wonder Calcium 600mg + Vitamin D3 20mcg Bone Health 220 Tablets
Nature's Wonder$9.894.7★
What buyers say about spring valley calcium 600 mg
What buyers praise and complain about, mined from review topics.What buyers love
“Calcium works well”
“reliable”
“Good deal”
“Nicely easy way to get these vitamins”
“Excellent - as advertised”
“I have no problem swallowing”
“Ease of use”
“Effective product”
“It is an excellent supplement for bone health”
“It covers many nutritional needs as I age”
What buyers complain about
“Very large pills”
“painful to swallow”
“Not all Calcium bottles”
“I would not take this without talking to a doctor first”
“Waste of money”
“this supplement is junk”
“These calcium capsules smell horrible”
“Total crap for your body”
“I'm allergic and get severe migraine attacks”
“they broke way to easily”
Top return reasons
Common questions
- Is spring valley calcium 600 mg profitable to sell on Amazon United States?
- The niche generates $80K/yr across 20 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +7.9%. Flapen's verdict: Skip it (48/100).
- How competitive is the spring valley calcium 600 mg niche?
- 8 brands and 83 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in spring valley calcium 600 mg?
- Top complaints mined from reviews: Size-Overall, Ease Of Chewing/Swallowing, Calcium. The return rate is 0.0%.
- When does demand for spring valley calcium 600 mg peak?
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- What does it cost to enter the spring valley calcium 600 mg niche?
- Listings span $9.89–$32.62; the average listing price is $22.12 (sweet spot $15–$100). The average incumbent carries 4,074 reviews — the moat a new listing must climb.