wd21x31902
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible14.9%search→purchase rate — share of searches ending in a sale
Review moat
Incredible65avg incumbent reviews — the moat a new listing must climb
Avg price
Great$74.36avg listing price — sweet spot $15–$100
Price range
Good$44.25–$133.55cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Okay$153K$153K/yr · 14K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Growth
Bad-16.0%90-day search growth — must beat 0% to launch
Returns
Bad9.2%return rate — above 5% kills the launch gate
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, wd21x31902 is a $153K/yr Amazon United States market (14K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan. Verdict: Skip it — 32/100.
Data updated Jul 5, 2026 · scored weekly · How we score niches
wd21x31902 market data
- Units sold / yr
- 2K–3K
- avg 500–750/product
- Revenue / yr
- $149K–$186K
- units × avg price
- Conversion rate
- 14.9%
- Avg BSR
- #20,397
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 67%
- Out of stock
- 0.0%
- Avg brand age
- 20 months
- Avg seller age
- 197 days
Competition & brand share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
3 falling
Sellers
8
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- FrameFirm53%
- Generic38%
- GE9%
Demand & seasonality
Weekly Amazon search volume, last 108 weeks — -16.0% search growth over the last 90 days.Peak months: Jan · busiest ÷ quietest = 1.7×
Top wd21x31902 search terms
- wd21x31902c7K/yr
- ge dishwasher user interface board3K/yr
- wd21x319024K/yr
Top wd21x31902 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 3 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Newest
by launch dateWhat buyers say about wd21x31902
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent Value Over OEM”
“Great product”
“Got the job done”
“Perfect fit”
“Compatible on my GE dishwasher”
“If youre handy, easy job”
“seems to work ok so far”
“Working well several months after replacing”
“Easy fix”
What buyers complain about
“We would hear the dishwasher beep when no one was near it”
“Once that was done I disconnected the wire from the lower motherboard”
“Blew out after a month”
“Fixed their dumb broken one”
“Did not work”
“You have to hold two buttons down for 5 seconds”
“that the user interface board in the door was the problem”
“They made a long video of disconnecting the whole machine from electric, water supply, water drain, etc”
Top return reasons
Common questions
- Is wd21x31902 profitable to sell on Amazon United States?
- The niche generates $153K/yr across 3 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -16.0%. Flapen's verdict: Skip it (32/100).
- How competitive is the wd21x31902 niche?
- 3 brands and 8 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in wd21x31902?
- Top complaints mined from reviews: Noise Level, Assembly/Installation, Durability. The return rate is 9.2% — above our launch gate.
- When does demand for wd21x31902 peak?
- Demand peaks in Jan; the busiest month runs 1.7× the quietest.
- What does it cost to enter the wd21x31902 niche?
- Listings span $44.25–$133.55; the average listing price is $74.36 (sweet spot $15–$100). The average incumbent carries 65 reviews — the moat a new listing must climb.