Is capsules size 1 profitable to sell on Amazon United States?

The niche generates $47K/yr across 11 tracked products. 90-day search growth is +6.6%. Flapen's verdict: Skip it (37/100).

How competitive is the capsules size 1 niche?

5 brands and 6 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in capsules size 1?

Top complaints mined from reviews: Taste-Overall, Ease Of Use, Size-Overall. The return rate is 0.0%.

When does demand for capsules size 1 peak?

Demand is steady year-round — the busiest month runs 1.2× the quietest.

What does it cost to enter the capsules size 1 niche?

Listings span $5.69–$21.92; the average listing price is $10.00 (sweet spot $15–$100). The average incumbent carries 2,527 reviews — the moat a new listing must climb.

capsules size 1

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Incredible13.4%

search→purchase rate — share of searches ending in a sale

Price range

Okay$5.69–$21.92

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Okay2,527

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+6.6%

90-day search growth — must beat 0% to launch

Avg price

Okay$10.00

avg listing price — sweet spot $15–$100

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Competition

Bad76%

top-5 click share — a locked-up shelf

Market size

Bad$47K

$47K/yr · 35K searches

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, capsules size 1 is a $47K/yr Amazon United States market (35K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 37/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

capsules size 1 market data

Units sold / yr: 4K–5K; avg 250–500/product
Revenue / yr: $40K–$50K; units × avg price
Conversion rate: 13.4%
Avg BSR: #1,904
Page quality: 0%
Prime: 100%
Sponsored: 91%
Out of stock: 0.0%
Avg brand age: 96 months
Avg seller age: 209 days

Competition & brand share

The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

76%

Top 20: 100%

Open market

XPRS Nutra76%
wananfu11%
EaccoViigr8%
Capsule Connection3%
Angtai JN2%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +6.6% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.2×

Open Trend

Top capsules size 1 search terms

empty capsules size 113K/yr +16.7%8.5% conv.
size 1 capsules4K/yr +29.5%11.9% conv.
capsules size 15K/yr +0.2%10.6% conv.
empty pill capsules size 15K/yr -13.7%11.0% conv.
gelatin capsules size 13K/yr +21.5%12.7% conv.
gel capsules empty size 12K/yr -3.3%14.5% conv.
size 1 capsules empty3K/yr -33.7%12.1% conv.

All search terms

Top capsules size 1 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 11 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

XPRS Nutra Size 1 Empty Capsules - 100 Count Clear Empty Vegan Capsules - Vegetarian Pills - DIY Vegetable Capsule Filling- Veggie Pill Caps for Do-It-Yourself Supplements

XPRS Nutra$7.064.7★4,691 rev

XPRS Nutra Size 1 Empty Capsules - 500 Count Clear Empty Vegan Capsules - Vegetarian Pills - DIY Vegetable Capsule Filling- Veggie Pill Caps for Do-It-Yourself Supplements

XPRS Nutra$10.134.7★4,691 rev

wananfu Size 1 Empty Capsules Vegetarian (100 Count) Bundle with Micro Lab Spoon Clear Fillable Veggie Pill Capsules Size 1 for Making Your Own Supplements

wananfu$6.294.6★475 rev

XPRS Nutra Size 1 Empty Capsules - 100 Count Clear Empty Gelatin Capsules - Empty Pill Capsules - DIY Capsule Filling - Fillable Pure Bovine Pill Gel Caps Pills for Do-It-Yourself Supplements

XPRS Nutra$6.964.5★479 rev

EaccoViigr Size 1 Empty Capsules - 150 Count Clear Empty Pill Capsules Size 1 with Capsule Filling Kit Fillable Vegan Vegetarian Capsule Empty for Vitamins Easy for DIY Supplements

EaccoViigr$7.074.6★34 rev

Newest

by launch date

EaccoViigr Size 1 Empty Capsules - 150 Count Clear Empty Pill Capsules Size 1 with Capsule Filling Kit Fillable Vegan Vegetarian Capsule Empty for Vitamins Easy for DIY Supplements

EaccoViigr$7.0734 rev

1y ago

Angtai JN Capsules Size 1 Empty Gelatin Pill Gel Caps Pure Bovine Clear (100 Count) Gluten Free Non-GMO Halal Certified Filling Kit with 2 Spoons for DIY Your Own Supplements

Angtai JN$5.69234 rev

2y ago

XPRS Nutra Vegan Size 1 Separated Capsules - 1000 Count Clear Premium Empty Capsules Separated in Bags - Pills 1 for DIY Supplement Filling

XPRS Nutra$21.92242 rev

4y ago

wananfu Size 1 Empty Capsules Vegetarian (100 Count) Bundle with Micro Lab Spoon Clear Fillable Veggie Pill Capsules Size 1 for Making Your Own Supplements

wananfu$6.29475 rev

4y ago

XPRS Nutra Size 1 Empty Capsules - 500 Count Empty Gelatin Capsules - Pills DIY Capsule Filling - Pure Bovine Pill Gel Caps for Do-It-Yourself Supplements (Clear)

XPRS Nutra$10.081,341 rev

7y ago

What buyers say about capsules size 1

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall25%

“Solid quality capsules”

Advertised Vs Actual Product13%

“As advertised”

Value For Money10%

“Good value”

Size-Overall8%

“Great size”

Ease Of Use8%

“Easy to use”

Dosage5%

“Excellent Product for Accurate Dosing of Oil-based Products”

Vegan/Organic5%

“One thing I really appreciate is that these capsules are vegan”

Efficiency3%

“Seems like a pretty good value for this amount of pill capsules”

Ingredients-Overall3%

“Very helpful for other herbal products”

Ease Of Chewing/Swallowing3%

“Easy to fill and swallow”

What buyers complain about

Taste-Overall12%

“These have a horrible chemical taste”

Ease Of Use8%

“It's a chore”

Size-Overall8%

“they don't fit much though”

Smell6%

“Most have a faint aroma”

Quality-Overall6%

“Bad Quality”

Storage Temperature6%

“They will melt”

Bitter6%

“tylan powder is very bitter making it challenging for him to eat food”

Durability6%

“They break easily”

Absorbency3%

“working with something that you don't want absorbing into your skin”

Value For Money2%

“I bought these caps to fill with powdered eggshell membrane-- which is now ridiculously expensive to buy in my preferred capsule form”

Top return reasons

Size-Overall80%

Material Quality20%

Common questions

Is capsules size 1 profitable to sell on Amazon United States?: The niche generates $47K/yr across 11 tracked products. 90-day search growth is +6.6%. Flapen's verdict: Skip it (37/100).
How competitive is the capsules size 1 niche?: 5 brands and 6 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in capsules size 1?: Top complaints mined from reviews: Taste-Overall, Ease Of Use, Size-Overall. The return rate is 0.0%.
When does demand for capsules size 1 peak?: Demand is steady year-round — the busiest month runs 1.2× the quietest.
What does it cost to enter the capsules size 1 niche?: Listings span $5.69–$21.92; the average listing price is $10.00 (sweet spot $15–$100). The average incumbent carries 2,527 reviews — the moat a new listing must climb.