prolong
Skip itA small market ($12K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.2%return rate — above 5% kills the launch gate
Avg price
Incredible$29.56avg listing price — sweet spot $15–$100
Price range
Great$9.70–$111.96cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay80%top-5 brand share — brands hold most of the demand
Competition
Okay70%top-5 click share — leaders hold, buyers still browse
Review moat
Bad5,616.24avg incumbent reviews — the moat a new listing must climb
Growth
Bad-5.4%90-day search growth — must beat 0% to launch
Conversion
Bad1.3%search→purchase rate — share of searches ending in a sale
Market size
Bad$12K$12K/yr · 33K searches
According to Flapen's Amazon United States niche tracking, prolong is a $12K/yr Amazon United States market (33K searches/yr). The top 5 brands hold 80% of demand. Demand peaks in Jan–Dec. Verdict: Skip it — 38/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
prolong market data
- Units sold / yr
- 1K–1K
- avg 0–100/product
- Revenue / yr
- $30K–$37K
- units × avg price
- Conversion rate
- 1.3%
- Avg BSR
- #3,729
- Page quality
- 0%
- Prime
- 76%
- Sponsored
- 47%
- Out of stock
- 8.8%
- Avg brand age
- 104 months
- Avg seller age
- 153 days
Competition & brand share
The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them.Brands
12 rising
Sellers
92
Top-5 brand share
80%
Top 20: 100%
Top-5 click share
70%
Top 20: 100%
Open market
15%
- Prolong Super Lubricants42%
- PROLONG LASH14%
- Prolube13%
- Liqui Moly6%
- Promescent5%
- Slick 505%
- Open — no brand owns it (6 brands, 15%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -5.4% search growth over the last 90 days.Peak months: Jan, Dec · busiest ÷ quietest = 1.8×
Top prolong 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 17 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Prolong Super Lubricants PSL11000 Engine Treatment - 12 oz White
Prolong Super Lubricants$33.114.8★2,312 rev
Prolong Super Lubricants PSL15000 Transmission Treatment 8 oz
Prolong Super Lubricants$23.694.6★1,479 rev
Eyelash Extension Shampoo & Brush - Large 100ml Bottle - Gentle Foaming Cleanser Lash Wash for Extensions and Natural Lashes - Safe Daily Makeup Remover - Paraben & Sulphate Free - Salon & Home Use
PROLONG LASH$25.004.6★943 rev
Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear Noise Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (1QT)
Prolube$37.004.6★2,793 rev
Promescent Desensitizing Delay Spray for Men Clinically Proven to Help You Last Longer in Bed - Better Maximized Sensation + Prolong Climax for Him 2.6 ml
Promescent$23.663.9★16,448 rev
Newest
by launch date
AlphaMale Premium Delay Cream - Last Longer in Bed - Desensitizing Creme with 7.5% Benzocaine - No-Mess Alternative to Delay Spray - To Prolong Intimacy - 1oz
AlphaMale$21.141,992 rev
Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear Noise Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (1Gallon)
Prolube$111.962,793 rev
Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear Noise Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (1QT)
Prolube$37.002,793 rev
Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear Noise Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (16oz)
Prolube$29.382,793 rev
(5 Pack) Prolong Power Pills for Men Prolong Power Prolong Power Capsules Prolong Power Supplement ProlongPower Capsules for Men Prolong Power Original Pills Review 300 Pills for 5 Months
LIVORKA$53.50241 rev
Trending
90-day click momentumAlphaMale Premium Delay Cream - Last Longer in Bed - Desensitizing Creme with 7.5% Benzocaine - No-Mess Alternative to Delay Spray - To Prolong Intimacy - 1oz
AlphaMale$21.144.1★
Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear Noise Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (1Gallon)
Prolube$111.964.6★
Slick 50 Original Engine Treatment | 32 oz. Single
Slick 50$16.544.8★
Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear Noise Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (1QT)
Prolube$37.004.6★
(5 Pack) Prolong Power Pills for Men Prolong Power Prolong Power Capsules Prolong Power Supplement ProlongPower Capsules for Men Prolong Power Original Pills Review 300 Pills for 5 Months
LIVORKA$53.503.2★
What buyers say about prolong
What buyers praise and complain about, mined from review topics.What buyers love
“Best oil additive in existence”
“quiet as could be”
“Works well”
“Improved lubricant and performance all around”
“AS ADVERTISED”
“great value for the money”
“Better gas mileage”
“Motor seems to be running smoother”
“Easy to use”
“been useing 10 years”
What buyers complain about
“I didn't get any results”
“it took alot of the mechanical noise from the motor”
“Expensive”
“Anxious to see if this lubricant lives up to it's reputation”
“smells bad”
“very poorly made”
“Caused leaking seals”
“Not strong enough”
“Not what it claims”
“Crap dont buy this product it made my engine tick”
Top return reasons
Common questions
- Is prolong profitable to sell on Amazon United States?
- The niche generates $12K/yr across 17 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -5.4%. Flapen's verdict: Skip it (38/100).
- How competitive is the prolong niche?
- 12 brands and 92 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 80% of demand.
- What do buyers complain about in prolong?
- Top complaints mined from reviews: Functionality-Overall, Noise Level, Value For Money. The return rate is 0.2%.
- When does demand for prolong peak?
- Demand peaks in Jan–Dec; the busiest month runs 1.8× the quietest.
- What does it cost to enter the prolong niche?
- Listings span $9.70–$111.96; the average listing price is $29.56 (sweet spot $15–$100). The average incumbent carries 5,616 reviews — the moat a new listing must climb.