gp800820
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible12.3%search→purchase rate — share of searches ending in a sale
Avg price
Incredible$31.22avg listing price — sweet spot $15–$100
Price range
Incredible$16.83–$67.84cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great212.86avg incumbent reviews — the moat a new listing must climb
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Returns
Bad6.3%return rate — above 5% kills the launch gate
Growth
Bad-16.3%90-day search growth — must beat 0% to launch
Competition
Bad90%top-5 click share — a locked-up shelf
Market size
Bad$29K$29K/yr · 8K searches
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, gp800820 is a $29K/yr Amazon United States market (8K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 38/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
gp800820 market data
- Units sold / yr
- 2K–2K
- avg 100–250/product
- Revenue / yr
- $47K–$62K
- units × avg price
- Conversion rate
- 12.3%
- Avg BSR
- #211
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 86%
- Out of stock
- 0.0%
- Avg brand age
- 55 months
- Avg seller age
- 159 days
Competition & brand share
The top 5 products capture 90% of clicks — a locked-up shelf that new listings rarely crack.Brands
5 rising
Sellers
43
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
90%
Top 20: 100%
Open market
0%
- Kohler50%
- Tanxury25%
- nipponAsia10%
- Edifla8%
- Vayolli7%
Demand
Weekly Amazon search volume, last 8 weeks — -16.3% search growth over the last 90 days.Top gp800820 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 7 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Kohler Genuine Part GP800820 Rite-Temp Pressure-Balancing Unit Cartridge SINGLE
Kohler$34.714.5★882 rev
GP876851 Mixer Cap and Pressure Balancing Unit Kit Compatible with Kohler Shower Valves K-304 and K-11748 Platforms Shower Cartridge Replacement Repair Kit Include GP800820 and GP77759
Tanxury$31.904.0★141 rev
GP800820 Pressure Balancing Unit Cartridge Compatible with Kohler GP500520 Shower Cartridge Replacement for Rite-Temp 1/2 Shower Valve and K-304 K-11748 Platforms
Tanxury$16.834.7★9 rev
1307346 Mixer Cap Sp Kit and GP800820 Pressure Balancing Unit Cartridge Compatible with Kohler Shower Valve Shower Cartridge Repair Kit for Rite-Temp and K-304 Shower Valve Retro
Edifla$67.844.3★7 rev
GP800820 Pressure Balancing Unit Cartridge Compatible With Kohler GP800820 Cartridge Shower Cartridge Replacement for Rite-Temp Shower Valve and K-304 K-11748 Platforms
Vayolli$17.414.4★16 rev
Newest
by launch date1307346 Mixer Cap Sp Kit and GP800820 Pressure Balancing Unit Cartridge Compatible with Kohler Shower Valve Shower Cartridge Repair Kit for Rite-Temp and K-304 Shower Valve Retro
Edifla$67.847 rev
GP876851 Mixer Cap and Pressure Balancing Unit Kit Compatible with Kohler Shower Valves K-304 and K-11748 Platforms Shower Cartridge Replacement Repair Kit Include GP800820 and GP77759
Tanxury$31.90141 rev
GP800820 Pressure Balancing Unit Cartridge Compatible with Kohler GP500520 Shower Cartridge Replacement for Rite-Temp 1/2 Shower Valve and K-304 K-11748 Platforms
Tanxury$16.839 rev
GP800820 Pressure Balancing Unit Cartridge Compatible With Kohler GP800820 Cartridge Shower Cartridge Replacement for Rite-Temp Shower Valve and K-304 K-11748 Platforms
Vayolli$17.4116 rev
GP876851 Mixer Cap and Pressure-Balancing Unit Kit Replacement for Kohler
nipponAsia$32.19344 rev
Trending
90-day click momentum1307346 Mixer Cap Sp Kit and GP800820 Pressure Balancing Unit Cartridge Compatible with Kohler Shower Valve Shower Cartridge Repair Kit for Rite-Temp and K-304 Shower Valve Retro
Edifla$67.844.3★
GP800820 Pressure Balancing Unit Cartridge Compatible with Kohler GP500520 Shower Cartridge Replacement for Rite-Temp 1/2 Shower Valve and K-304 K-11748 Platforms
Tanxury$16.834.7★
GP876851 Mixer Cap and Pressure Balancing Unit Kit Compatible with Kohler Shower Valves K-304 and K-11748 Platforms Shower Cartridge Replacement Repair Kit Include GP800820 and GP77759
Tanxury$31.904.0★
Kohler Genuine Part GP800820 Rite-Temp Pressure-Balancing Unit Cartridge SINGLE
Kohler$34.714.5★
GP800820 Pressure Balancing Unit Cartridge Compatible With Kohler GP800820 Cartridge Shower Cartridge Replacement for Rite-Temp Shower Valve and K-304 K-11748 Platforms
Vayolli$17.414.4★
What buyers say about gp800820
What buyers praise and complain about, mined from review topics.What buyers love
“good instructions and fairly easy to install”
“The unit seems fine”
“Perfect fit”
“Part itself is as described”
“Thats so much cheaper than original Kohler products”
“Thank you for a low cost to fix an otherwise expensive repair”
“Works like it should”
“Worked with my Kohler shower setup. No issues so far!”
“it was very easy to do”
“So far so good, leak-less install”
What buyers complain about
“second it leaked copious amounts of water”
“Failed after 4 months”
“Questionable fitment”
“was not an exact footprint”
“it seems like Kohler made a tweak in the product design”
“Only thing is it didn't come with any paper instructions”
“Not worth the discount”
“I had to reassemble it”
Top return reasons
Common questions
- Is gp800820 profitable to sell on Amazon United States?
- The niche generates $29K/yr across 7 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -16.3%. Flapen's verdict: Skip it (38/100).
- How competitive is the gp800820 niche?
- 5 brands and 43 sellers compete. The top 5 products take 90% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in gp800820?
- Top complaints mined from reviews: Leak-Proof, Durability, Size-Overall. The return rate is 6.3% — above our launch gate.
- What does it cost to enter the gp800820 niche?
- Listings span $16.83–$67.84; the average listing price is $31.22 (sweet spot $15–$100). The average incumbent carries 213 reviews — the moat a new listing must climb.