round up refill
Worth a lookShows searches that convert (18.5% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Conversion
Incredible18.5%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Avg price
Incredible$31.67avg listing price — sweet spot $15–$100
Growth
Great+86.3%90-day search growth — must beat 0% to launch
Price range
Great$6.19–$101.71cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$481K$481K/yr · 82K searches
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Review moat
Bad4,069.57avg incumbent reviews — the moat a new listing must climb
Competition
Bad75%top-5 click share — a locked-up shelf
Brand share
Bad98%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, round up refill is a $481K/yr Amazon United States market (82K searches/yr). The top 5 brands hold 98% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 61/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
round up refill market data
- Units sold / yr
- 15K–20K
- avg 1,250–1,500/product
- Revenue / yr
- $475K–$633K
- units × avg price
- Conversion rate
- 18.5%
- Avg BSR
- #28
- Page quality
- 0%
- Prime
- 86%
- Sponsored
- 93%
- Out of stock
- 0.0%
- Avg brand age
- 103 months
- Avg seller age
- 144 days
Competition & brand share
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.Brands
6 flat
Sellers
74
Top-5 brand share
98%
Top 20: 100%
Top-5 click share
75%
Top 20: 100%
Open market
0%
- Roundup72%
- Ortho11%
- Spectracide9%
- Control Solutions3%
- RM432%
- Spruce2%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 70 weeks — +86.3% search growth over the last 90 days.Peak months: Jun, Jul, Aug · busiest ÷ quietest = 5.9×
Top round up refill search terms
- round up refill17K/yr
- weed killer refill18K/yr
- roundup refill11K/yr
- plant killer10K/yr
- ground sterilizer9K/yr
- roundup weed killer refill5K/yr
- soil sterilizer6K/yr
- soil sterilant3K/yr
- plant killer outdoor4K/yr
Top round up refill 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 14 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Roundup Weed & Grass Killer Refill Use in and Around Flower Beds Trees Driveways Walkways & More 1.25 gal.
Roundup$16.414.6★3,685 rev
Roundup Dual Action 365 Weed & Grass Killer Plus 12 Month Preventer Refill Kills & Prevents for up to 1 Year 1.25 gal.
Roundup$31.184.5★1,111 rev
Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer Refill 1.25 gal.
Roundup$23.164.6★459 rev
Spectracide Weed And Grass Killer 1.33 Gallon AccuShot Sprayer Refill
Spectracide$11.884.5★3,508 rev
Roundup for Lawns Refill - Tough Weed Killer for Use on Northern Grasses 1.25 gal.
Roundup$20.174.4★408 rev
Newest
by launch date
Spruce Weed Killer Refill - Versatile Weed & Grass Killer for Flower Beds Driveways & Mulch Beds - No Pour No Mix No Mess Refill - Kills Dandelions Crabgrass & More (64 Oz)
Spruce$21.952,780 rev
Ortho GroundClear Year Long Vegetation Killer2 Concentrate - Kills and Prevents Weeds Up to 1 Year 1 gal.
Ortho$28.043,588 rev
Ortho GroundClear Year Long Vegetation Killer Refill - Kills Weeds and Grasses Prevents Unwanted Weeds and Grasses for Up to 1 Year 1 gal.
Ortho$16.662,556 rev
Ortho GroundClear Year Long Vegetation Killer2 Concentrate Kills and Prevents Weeds Up to 1 Year 2 gal. Black
Ortho$43.823,588 rev
Roundup Weed & Grass Killer Refill Use in and Around Flower Beds Trees Driveways Walkways & More 1.25 gal.
Roundup$16.413,685 rev
Trending
90-day click momentumSpruce Weed Killer Refill - Versatile Weed & Grass Killer for Flower Beds Driveways & Mulch Beds - No Pour No Mix No Mess Refill - Kills Dandelions Crabgrass & More (64 Oz)
Spruce$21.954.4★
Ortho GroundClear Year Long Vegetation Killer2 Concentrate Kills and Prevents Weeds Up to 1 Year 2 gal. Black
Ortho$43.824.0★
Spectracide Weed & Grass Killer Use On Driveways Walkways and Around Trees and Flower Beds 1 Gallon (RTU Spray)
Spectracide$6.194.4★
Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer Refill 1.25 gal.
Roundup$23.164.6★
Ortho GroundClear Weed & Grass Killer with Comfort Wand - Kills Dandelions Chickweed Crabgrass Moss & More OMRI Listed Ready-to-Use Grass and Weed Killer Spray 1 gal.
Ortho$21.224.3★
What buyers say about round up refill
What buyers praise and complain about, mined from review topics.What buyers love
“This product does work with killing the pests weeds”
“AS ADVERTISED”
“The overall build quality is solid”
“Fair price”
“easy to store”
“found it does an adequate job of killing the ones that are growing”
“Easy to spray”
“No lingering smell”
“Safe product”
“Great killed right away”
What buyers complain about
“Dosent work”
“did not kill them”
“Too expensive”
“It won't spray”
“it definitely has not kept anything from growing back”
“completely broke after just a few uses”
“Poor product”
“False advertising”
“Very weak”
“Leaks Out”
Top return reasons
Common questions
- Is round up refill profitable to sell on Amazon United States?
- The niche generates $481K/yr across 14 tracked products. 90-day search growth is +86.3%. Flapen's verdict: Worth a look (61/100).
- How competitive is the round up refill niche?
- 6 brands and 74 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 98% of demand.
- What do buyers complain about in round up refill?
- Top complaints mined from reviews: Functionality-Overall, Pest/Insect Control, Value For Money. The return rate is 0.3%.
- When does demand for round up refill peak?
- Demand peaks in Jun–Jul–Aug; the busiest month runs 5.9× the quietest.
- What does it cost to enter the round up refill niche?
- Listings span $6.19–$101.71; the average listing price is $31.67 (sweet spot $15–$100). The average incumbent carries 4,070 reviews — the moat a new listing must climb.