shims
Skip itPrices mostly outside the sweet spot ($4.92–$15.17) — this niche doesn't clear our bar today.
Returns
Incredible0.7%return rate — above 5% kills the launch gate
Conversion
Great9.6%search→purchase rate — share of searches ending in a sale
Review moat
Good593.58avg incumbent reviews — the moat a new listing must climb
Brand share
Okay81%top-5 brand share — brands hold most of the demand
Growth
Okay+0.8%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Avg price
Bad£7.29avg listing price — sweet spot $15–$100
Competition
Bad79%top-5 click share — a locked-up shelf
Market size
Bad£62K£62K/yr · 89K searches
Price range
Bad£4.92–£15.17cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, shims is a £62K/yr Amazon United Kingdom market (89K searches/yr). The top 5 brands hold 81% of demand. Verdict: Skip it — 38/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
shims market data
- Units sold / yr
- 6K–8K
- avg 500–750/product
- Revenue / yr
- £44K–£58K
- units × avg price
- Conversion rate
- 9.6%
- Avg BSR
- #31
- Page quality
- 0%
- Prime
- 92%
- Sponsored
- 75%
- Out of stock
- 0.5%
- Avg brand age
- 26 months
- Avg seller age
- 191 days
Competition & brand share
The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.Brands
10 falling
Sellers
53
Top-5 brand share
81%
Top 20: 100%
Top-5 click share
79%
Top 20: 100%
Open market
11%
- EVOGES40%
- HuangXinyu12%
- Broadfix11%
- TIMCO11%
- ALWAYSFIRST 4 FIXINGS8%
- Nelson Wood Shims7%
- Open — no brand owns it (4 brands, 11%)
Demand & seasonality
Weekly Amazon search volume, last 68 weeks — +0.8% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top shims search terms
- shims30K/yr
- packers and shims16K/yr
- plastic shims12K/yr
- spacers packers11K/yr
- shim9K/yr
- shims for levelling7K/yr
- door shims3K/yr
- shims and packers638/yr
Top shims 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 12 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Evoges 28mm x 100mm Flat Plastic Glazing Packers (1-6mm) Durable Shim Spacers for DIY Home Improvement Window and Door Frame Installations (Mixed Pack of 42)
EVOGES£5.824.6★317 rev
72 Pcs Plastic Packers and Shims Flat Plastic Glazing Packers Plastic Shims and Packers for Door and Window Glazing Glass Packers Window and Door Spacers(100 mm x 28 mm x 1/2/3/4/5/6 mm)
HuangXinyu£5.274.7★60 rev
TIMCO Assorted Packers - Assorted colours - Colourful spacers shims plastic packers - 28mm 100 x 28 - Bag of 200
TIMCO£8.564.6★1,564 rev
200 MIXED Plastic Small U Shims/Packers/Pails/Horseshoe/Wedge - 55 x 43mm -//////35 of each 1mm/2mm/3mm/4mm/5mm and 25 of 6mm///////
Broadfix£13.784.7★168 rev
Nelson Wood Shims - 8 Wood Shims (12 count)
Nelson Wood Shims£6.264.5★1,757 rev
Newest
by launch date
100pcs U Shaped Plastic Packers Assorted Shims in 6 Sizes (1mm to 6mm) for Window and Door Installation Flooring Joinery Furniture Leveling Durable Plastic Wedges for Builders & DIY Projects
Lumivra£4.9217 rev
72 Pcs Plastic Glazing Packers 28mm × 100mm Durable Shim Spacers 6 Thicknesses Window Packers Non-Slip Design Lightweight Levelling Plates for DIY Home Improvement Door Frame Installations
YunJoyous£5.6415 rev
72 Pcs Plastic Packers and Shims Flat Plastic Glazing Packers Plastic Shims and Packers for Door and Window Glazing Glass Packers Window and Door Spacers(100 mm x 28 mm x 1/2/3/4/5/6 mm)
HuangXinyu£5.2760 rev
100pc Assorted Plastic Packers Durable Shims in 6 Sizes (1mm to 6mm) Ideal for Leveling Spacing and Packing Perfect for Windows Doors
Fizzix£4.9412 rev
72 Pcs Plastic Glazing Packers 28mm x 100mm Colourful Spacers Window Packers Assorted Flat Shim Spacers for DIY Window/Door/Floor Installations (Mixed 1-6mm)
Eleechen£5.04112 rev
Trending
90-day click momentum72 Pcs Plastic Packers and Shims Flat Plastic Glazing Packers Plastic Shims and Packers for Door and Window Glazing Glass Packers Window and Door Spacers(100 mm x 28 mm x 1/2/3/4/5/6 mm)
HuangXinyu£5.274.7★
100pc Assorted Plastic Packers Durable Shims in 6 Sizes (1mm to 6mm) Ideal for Leveling Spacing and Packing Perfect for Windows Doors
Fizzix£4.944.9★
200 MIXED Plastic Small U Shims/Packers/Pails/Horseshoe/Wedge - 55 x 43mm -//////35 of each 1mm/2mm/3mm/4mm/5mm and 25 of 6mm///////
Broadfix£13.784.7★
Evoges 28mm x 100mm Flat Plastic Glazing Packers (1-6mm) Durable Shim Spacers for DIY Home Improvement Window and Door Frame Installations (Mixed Pack of 42)
EVOGES£5.824.6★
TIMCO Assorted Packers - Assorted colours - Colourful spacers shims plastic packers - 28mm 100 x 28 - Bag of 200
TIMCO£8.564.6★
What buyers say about shims
What buyers praise and complain about, mined from review topics.What buyers love
“Good value”
“Well made, plenty of size variety in the box”
“As described. As described....does the job!!!!”
“Good item good size did the job I got them for”
“Useful”
“The different thicknesses were fantastic for us as we had different size gaps everywhere”
“Versatile”
“These are great plentiful solid stackable shims”
“Durable”
“Perfect for the job fitting floor boards”
What buyers complain about
“far too expensive”
“Given the fact there is seemingly no standard colours for these things it leaves you guessing which is which”
“Splintery”
“arent very sturdy”
“Poor quality”
“it seems odd that no where on them is a marking indicating their thickness”
“These were so hard to attach to my door”
“So hard to fit”
“These were so hard to attach to my door”
Top return reasons
Common questions
- Is shims profitable to sell on Amazon United Kingdom?
- The niche generates £62K/yr across 12 tracked products. 90-day search growth is +0.8%. Flapen's verdict: Skip it (38/100).
- How competitive is the shims niche?
- 10 brands and 53 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 81% of demand.
- What do buyers complain about in shims?
- Top complaints mined from reviews: Value For Money, Color, Flexibility. The return rate is 0.7%.
- When does demand for shims peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the shims niche?
- Listings span £4.92–£15.17; the average listing price is £7.29 (sweet spot $15–$100). The average incumbent carries 594 reviews — the moat a new listing must climb.