Rock Tumbler
MaybeThe products selling today average only 4.1★. But buyers convert on only 1.9% of searches, so Rock Tumbler is a Maybe.
- Flapen Score
- 54 / 100Top 26% of 3,232 Baumarkt niches · +5 vs the category median of 4954
- Market size
- €148K/yr101K searches / yr
- 90-day growth
- +16.6%search demand this quarter
- Competition
- 41%top-5 click share · 21 brands · 54 sellers
Flapen Score
Rock Tumbler against its category
The dotted line is the Baumarkt average. Past it, Rock Tumbler is stronger. Inside it, weaker.
Market
The Rock Tumbler market on Amazon at a glance
Shoppers on Amazon Germany searched for Rock Tumbler 101K times last year and spent an estimated €148K. The top 5 brands take 78% of clicks. Demand peaks in Aug–Oct. Flapen scores it 54 out of 100, a Maybe.
01 · Demand
An estimated 1.9% of those searches ended in a purchase.
Shoppers searched for this 101K times in the last 12 months. That counts every search on Amazon Germany for this niche's terms. An estimated 1.9% of those searches ended in a purchase. Searches in the last 90 days moved +16.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated €148K a year.
- Searches, last 12 months
- 101K
- Growth, 90 days vs prior 90
- +16.6%
- Conversion, latest week
- 1.9%
- Market size, estimated
- €148Ka year
- Peak month
- October1.9× the quietest month
- Top search term
- rock tumbler23K searches a year
02 · Price
A sale here is worth €78.75.
Listings sell for €78.75 on average, from €7.20 to €243.44. Amazon reports units sold in ranges. This niche sold 1K to 1K a year. The average listing sells 0 to 100 of them. At €78.75 that is €0 to €8K a year per listing.
- Average price
- €78.75inside the $15 to $100 sweet spot
- Price range
- €7.20–€243.44
- Amazon Germany median price
- €18.99across 29,809 niches
- Units sold a year
- 1K–1K
- Units per listing a year
- 0–100
- Revenue per listing a year
- €0–€8K
- Returns
- 2.3%of orders · Amazon Germany median 1.1%
03 · Entry bar
The bar here is low.
84% of listings pay for placement with sponsored ads. 71% ship with Prime. On an average day, 6.8% of listings are out of stock. The average listing ranks #111 within Elektrowerkzeuge. It carries 1,102 reviews at 4.13 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 84%
- Prime listings
- 71%
- Out of stock, average day
- 6.8%
- Average rank
- #111in Elektrowerkzeuge
- Average rating
- 4.13 starsAmazon Germany average 4.37 stars
- Average reviews
- 1,102per listing
- Listings tracked
- 31
04 · Newcomers
2 of last year's 9 launches cleared the first-year sales bar.
9 products launched here in the last 12 months. 2 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 35 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 9
- Successful launches
- 2Amazon's first-year sales bar
- Average brand age
- 35 months
Products
Top Rock Tumbler products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 8, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Rock Tumbler Kit Steintrommel Set Steinschleifmaschine mit 9-Tage-Timer & 9-Gang-Einstellungen Komplette Steinpoliermaschine Werkzeuge fürs Selbermachen
- Price
- €54.95
- Rating
- 4.3/5
- Reviews
- 52
- Age
- 3mo ago

Professionelle Geräuscharme Rock Tumbler Maschine Steinpoliermaschinen-Set mit Geräuschdämmung für Kinder Erwachsene und Steinsammler 3-Gang-Motor & 9-Tage-Timer Geologie-Hobby-Spielzeug-Geschenk
- Price
- €44.36
- Rating
- 3.8/5
- Reviews
- 54
- Age
- 1y ago

National Geographic Steintrommel-Set - Extra große 1 36 kg Kapazität 1 36 kg ungeschliffene Edelsteine 4 Polierstärken Schmuckbefestigungen EIN pädagogisches Mint-Wissenschafts-Set
- Price
- €113.66
- Rating
- 4.4/5
- Reviews
- 4,762
- Age
- 5y ago

NATIONAL GEOGRAPHIC Steintrommel Hobby-Set Vollständiges Set zum Steine Trommeln mit Hochwertiger Trommel Edelsteinen und Patentierter GemFoam-Schaumpolitur Pädagogisches Mint-Wissenschafts-Set
- Price
- €77.46
- Rating
- 4.2/5
- Reviews
- 3,618
- Age
- 5y ago

Professionelle Rock Tumbler Maschine Steinpoliermaschinen-Set für Kinder Erwachsene und Steinsammler 3-Gang-Motor & 9-Tage-Timer Geologie-Hobby-Spielzeug-Geschenk Orange 2026 Upgrade
- Price
- €40.68
- Rating
- 3.7/5
- Reviews
- 36
- Age
- 6mo ago
Trending
estimated 90-day click momentum
Professionelle Rock Tumbler Maschine Steinpoliermaschinen-Set für Kinder Erwachsene und Steinsammler 3-Gang-Motor & 9-Tage-Timer Geologie-Hobby-Spielzeug-Geschenk 2026 Upgrade
- Price
- €41.98
- Rating
- 3.7/5
- Reviews
- 36
- Age
- 6mo ago

Professionelle Rock Tumbler Maschine Steinpoliermaschinen-Set für Kinder Erwachsene und Steinsammler 3-Gang-Motor & 9-Tage-Timer Geologie-Hobby-Spielzeug-Geschenk Orange 2026 Upgrade
- Price
- €40.68
- Rating
- 3.7/5
- Reviews
- 36
- Age
- 6mo ago

Rock Tumbler Kit Steintrommel Set Steinschleifmaschine mit 9-Tage-Timer & 9-Gang-Einstellungen Komplette Steinpoliermaschine Werkzeuge fürs Selbermachen
- Price
- €54.95
- Rating
- 4.3/5
- Reviews
- 52
- Age
- 3mo ago

Blue Marble NATIONAL Geographic Trommelpolierer Zubehör 4 Phasen Siliziumkarbid Grobpolierpulver Steinschleif-Set mit 680 g Keramikfüllkörper & GemFoam Poliermedium
- Price
- €38.02
- Rating
- 4.7/5
- Reviews
- 52
- Age
- 11mo ago

Tischpuffer Polierer 750W - 5 in 1 Poliermaschine für Edelsteine und Schmuck | Polierschleifmaschine für Polieren Schneiden Schleifen und Schnitzen (800-10.000 RPM)
- Price
- €58.85
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 1y ago
Newest
by launch date
Rock Tumbler Kit Steintrommel Set Steinschleifmaschine mit 9-Tage-Timer & 9-Gang-Einstellungen Komplette Steinpoliermaschine Werkzeuge fürs Selbermachen
- Price
- €54.95
- Rating
- 4.3/5
- Reviews
- 52
- Age
- 3mo ago

Professionelle Rock Tumbler Maschine Steinpoliermaschinen-Set für Kinder Erwachsene und Steinsammler 3-Gang-Motor & 9-Tage-Timer Geologie-Hobby-Spielzeug-Geschenk Orange 2026 Upgrade
- Price
- €40.68
- Rating
- 3.7/5
- Reviews
- 36
- Age
- 6mo ago

Professionelle Rock Tumbler Maschine Steinpoliermaschinen-Set für Kinder Erwachsene und Steinsammler 3-Gang-Motor & 9-Tage-Timer Geologie-Hobby-Spielzeug-Geschenk 2026 Upgrade
- Price
- €41.98
- Rating
- 3.7/5
- Reviews
- 36
- Age
- 6mo ago

Poliermaschine 100 W vibrierende Poliertrommel Vibrationsbecher Polieren bis 5 KG Rotary Jewelry Tumbler Polierer 8 Zoll Schmuck Polierer Maschine Leistungsstark für Jäger Juweliere Gastronomen
- Price
- €134.23
- Rating
- 2.0/5
- Reviews
- 1
- Age
- 7mo ago

VEVOR elektrische Poliermaschine Steinpolierer mit 3 63 kg belastbarer Doppeltrommel 4 Drehzahlstufen Steinpolierset mit 9-Tage-Poliertimer & intuitivem Bedienfeld & Adapter Schwarz
- Price
- €87.24
- Rating
- 2.8/5
- Reviews
- 28
- Age
- 7mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 41% of clicks. Leaders hold, but buyers still shop past them.
Brands
21 falling
Sellers
54
Est. top-5 brand share
78%
Top 20: 99%
Est. top-5 click share
41%
Top 20: 87%
Open market
22%
- Blue Marble22%
- VEVOR16%
- Acmeenjoy15%
- Jofuni15%
- SanBouSi5%
- Transplant5%
Demand
Rock Tumbler search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Aug, Oct · busiest ÷ quietest = 1.9×
Search terms
Top Rock Tumbler search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- rock tumbler23K/yr
- steinschleifmaschine15K/yr
- steintrommel12K/yr
- poliertrommel12K/yr
- edelstein schleifmaschine9K/yr
- steine schleifen6K/yr
- steinpoliermaschine7K/yr
- steinschleifer5K/yr
- stein schleifmaschine4K/yr
- tumbler poliermaschine6K/yr
Reviews and returns
What reviews say buyers love and hate about Rock Tumbler
We read the reviews and the return reasons for every product selling here.
“Man soll nicht von einem einzelnen Gerät auf die Qualität der gesamten Serie schließen”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
20 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Rock Tumbler questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









