---
title: "Ultracal 30 — $33K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/arts-crafts-sewing/ultracal-30"
last_updated: "2026-08-09T08:00:25.321Z"
locale: en
meta:
description: "Niche score 39/100 · $33K/yr market · 15K searches/yr · $50.18 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 39/100 · $33K/yr market · 15K searches/yr · $50.18 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Ultracal 30 — $33K/yr Amazon US Niche (2026) - Flapen"
---
# **ultracal 30**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 8Growth 54Conversion 54Competition 12Returns 86Price range 73Avg price 93Brand share 0Review moat 75Quality gap 23
**Avg price**
**Great****$50.18**
avg listing price — sweet spot $15–$100
**Returns**
**Great****1.5%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****506.56**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Good****$17.91–$131.11**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Good****+25.9%**
90-day search growth — must beat 0% to launch
**Conversion**
**Good****4.5%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****85%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$33K**
$33K/yr · 15K searches
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, ultracal 30 is a $33K/yr Amazon United States market (15K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 39/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **ultracal 30 market data**
- **Units sold / yr**
- **750–1K**
- avg 100–250/product
- **Revenue / yr**
- **$38K–$50K**
- units × avg price
- **Conversion rate**
- **4.5%**
- **Avg BSR**
- **#856**
- **Page quality**
- **0%**
- **Prime**
- **44%**
- **Sponsored**
- **44%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **78 months**
- **Avg seller age**
- **186 days**
## **Competition & brand share**
The top 5 products capture 85% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▲rising
**Sellers**
**6**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**85%**
Top 20: 100%
**Open market**
**0%**
- Laguna57% - USG30% - Falling in Art6% - Capital Ceramics5% - CASTDIY3% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +25.9% search growth over the last 90 days.
400300Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/arts-crafts-sewing/ultracal-30/trend)
## **Top ultracal 30 search terms**
- **ultracal 30**9K/yr+34.8%5.4% conv. - **gypsum cement**4K/yr+20.1%2.7% conv. - **ultracal 30 gypsum cement**2K/yr-8.9%7.4% conv. [**All search terms **](https://flapen.com/research/us/arts-crafts-sewing/ultracal-30/search-terms)
## **Top ultracal 30 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.
0%15%$5K30%$10K45%$15K60%$20K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**ULTRACAL 30 Gypsum Cement - Plaster - for Dot Mandala Mold Making and Casting Ideal for Latex Molds! Takes Excellent Detail (10 lb)**Laguna**$35.61**4.6★961 rev](https://www.amazon.com/dp/B06XWR2QD8) [2**Ultracal 30 Gypsum Cement 2.5 lbs / 1.13 kg - Plaster - For Mold Making and Casting Ideal for Latex Molds! Takes Excellent Detail**USG**$21.56**4.5★311 rev](https://www.amazon.com/dp/B01EK5BRPW) [3**10 Lbs ULTRACAL 30 Gypsum Cement - Plaster - for Moldmaking and Casting Ideal for Latex Molds! Takes Excellent Detail**USG**$32.87**4.7★187 rev](https://www.amazon.com/dp/B08PH694H9) [4**Falling in Art 5 LB Plaster of Paris Hand Mold Casting Kit Powder Gypsum Cement Pottery & Ceramic Plaster Powder for Crafts Sculpture Diorama and Home Decor**Falling in Art**$18.82**4.5★2,690 rev](https://www.amazon.com/dp/B077MD57S3) [5**ULTRACAL 30 Gypsum Cement - 25 LBS - Mold Making and Casting Plaster Ideal for Latex Molds! Takes Excellent Detail**USG**$63.63**4.8★35 rev](https://www.amazon.com/dp/B08PHPBYKB)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**CASTDIY Casting Powder 1 kg Zero Bubbles Super White Super Hard Odorless Plaster Gypsum Powder for Silicone Molds 30 Minutes Demold Suitable for Handicrafts Decorations Plaster Statues DIY**CASTDIY**$17.91**92 rev1y ago](https://www.amazon.com/dp/B0FF22CG74) [**10 Lbs ULTRACAL 30 Gypsum Cement - Plaster - for Moldmaking and Casting Ideal for Latex Molds! Takes Excellent Detail**USG**$32.87**187 rev5y ago](https://www.amazon.com/dp/B08PH694H9) [**ULTRACAL 30 Gypsum Cement - 25 LBS - Mold Making and Casting Plaster Ideal for Latex Molds! Takes Excellent Detail**USG**$63.63**35 rev5y ago](https://www.amazon.com/dp/B08PHPBYKB) [**40 Lbs ULTRACAL 30 Gypsum Cement - Plaster - for Moldmaking and Casting Ideal for Latex Molds! Takes Excellent Detail**USG**$99.82**20 rev6y ago](https://www.amazon.com/dp/B089QX3YX2) [**ULTRACAL 30 Gypsum Cement - Plaster - for Mold Making and Casting Ideal for Latex Molds! Takes Excellent Detail (50 lb) Ships in Two 25 Pound Boxes**Laguna**$131.11**100 rev6y ago](https://www.amazon.com/dp/B083RJHRBH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**10 Lbs ULTRACAL 30 Gypsum Cement - Plaster - for Moldmaking and Casting Ideal for Latex Molds! Takes Excellent Detail**USG**$32.87**4.7★**▲ 20%**](https://www.amazon.com/dp/B08PH694H9) [**Ultracal 30 Gypsum Cement 2.5 lbs / 1.13 kg - Plaster - For Mold Making and Casting Ideal for Latex Molds! Takes Excellent Detail**USG**$21.56**4.5★**▲ 14%**](https://www.amazon.com/dp/B01EK5BRPW) [**CASTDIY Casting Powder 1 kg Zero Bubbles Super White Super Hard Odorless Plaster Gypsum Powder for Silicone Molds 30 Minutes Demold Suitable for Handicrafts Decorations Plaster Statues DIY**CASTDIY**$17.91**4.6★**— 2%**](https://www.amazon.com/dp/B0FF22CG74) [**ULTRACAL 30 Gypsum Cement - Plaster - for Dot Mandala Mold Making and Casting Ideal for Latex Molds! Takes Excellent Detail (10 lb)**Laguna**$35.61**4.6★**— 1%**](https://www.amazon.com/dp/B06XWR2QD8) [**40 Lbs ULTRACAL 30 Gypsum Cement - Plaster - for Moldmaking and Casting Ideal for Latex Molds! Takes Excellent Detail**USG**$99.82**4.9★**— 4%**](https://www.amazon.com/dp/B089QX3YX2)
**~~View all trending →~~**
## **What buyers say about ultracal 30**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“Great quality”*
**Ease Of Use**13%
*“easy to use”*
**Value For Money**10%
*“Best $ can buy”*
**Advertised Vs Actual Product**7%
*“as described”*
**Office Usability**7%
*“Works great, made a bunch of little desk geese”*
**Paint Quality**4%
*“Its very durable for painting and kid hands”*
**Size-Overall**3%
*“is a good size”*
**Assembly/Installation**3%
*“Sets up super fast”*
**Time Taken**3%
*“Quick, easy, and great results”*
**Durability**3%
*“Its very durable for painting and kid hands”*
### **What buyers complain about **
**Value For Money**14%
*“Over priced”*
**Functionality-Overall**13%
*“Didnt work for me”*
**Quality-Overall**11%
*“Unfortunately, the quality has not been consistent”*
**Instructions/User Manual/Troubleshooting**8%
*“No directions on the mixing ratio or anything”*
**Advertised Vs Actual Product**8%
*“Not as advertised”*
**Thickness**7%
*“However, with my second and third purchases, the powder became extremely thick as soon as it touched the water and formed lots of lumps”*
**Weight Heavy**4%
*“definitely feels heavy like cement”*
**Assembly/Installation**4%
*“To fast to set”*
**Paint Quality**4%
*“and doesn't take paint worth a crap”*
### **Top return reasons **
**Value For Money**30%
**Advertised Vs Actual Product**23%
**Functionality-Overall**8%
**Material Quality**7%
**Size-Overall**7%
**Leak-Proof**5%
**Color**4%
**Defective Material/Parts**3%
**Drying Time**2%
**Strength**2%
## **Common questions**
- **Is ultracal 30 profitable to sell on Amazon United States?**
- The niche generates $33K/yr across 9 tracked products. 90-day search growth is +25.9%. Flapen's verdict: Skip it (39/100).
- **How competitive is the ultracal 30 niche?**
- 5 brands and 6 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in ultracal 30?**
- Top complaints mined from reviews: Value For Money, Functionality-Overall, Quality-Overall. The return rate is 1.5%.
- **When does demand for ultracal 30 peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the ultracal 30 niche?**
- Listings span $17.91–$131.11; the average listing price is $50.18 (sweet spot $15–$100). The average incumbent carries 507 reviews — the moat a new listing must climb.
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