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Best-selling 3D scanners of 2021
Ranked by where each one actually sat in Amazon’s sales chart through 2021 — not by review count, not by our opinion, and not by who paid for placement. Position 1 is the best seller.
Not enough data to rank 2021 honestly. We hold a full-enough sales-rank history for only 4 of these products that far back, and a “top ten” drawn from 4 products would be a list of everything we have rather than a ranking. The years above with more data are worth reading instead.
Ranked from 4 3D scanners with at least half a year of sales-rank history in 2021.
| # | 3D scanner | Typical rank | Best rank | Rating | Price now |
|---|---|---|---|---|---|
| 1 |  Shining 3D Einscan-SE EinScan SE |
#48,788 | #7,161 | ★★★★☆ 4.1 (68) | £1,404.69 |
| 2 |  Uniden UBC-75XLT 25-88mhz - 108-174mhz 400-512 Handheld Scanner |
#90,568 | #10,322 | ★★★★☆ 4.1 (24) | £174.99 |
| 3 |  Slamtec RPLIDAR A2 2D 360 degree 12 meters Scanning Radius LIDAR Sensor Scanne |
#344,319 | #222,612 | ★★★★★ 5.0 (1) | not in stock |
| 4 | Slamtec RPLIDAR A2M7 2D 360 Degree 16 Meters Scanning Radius LIDAR Sensor Scan |
#693,244 | #604,564 | — | not in stock |
How this ranking is built
Amazon publishes a sales rank for every product, updated continuously. Rank 1 in a category is its best seller. We take each product’s full rank history and compute a duration-weighted median for the calendar year: the position it actually held for most of that year, rather than an average, which a single viral week would distort.
“Best rank” is the highest position it reached at any point — useful context, but a product can spike to #200 for a weekend and spend the rest of the year at #4,000, which is why the ranking uses the median.
Two things this page cannot tell you
Sales rank is not units sold. Amazon does not publish sales figures. Rank is a good relative signal — something at #500 is genuinely outselling something at #5,000 — but the gap between two adjacent entries here could be large or tiny, and there is no honest way for us to say which.
Older years are biased towards survivors. The products we hold history for are the ones selling today. One that sold well in 2021 and was discontinued is not in our catalogue, so it cannot appear in that year’s list even though it belongs there. The further back you go, the more that matters — which is why we show how many products each year was ranked from, and refuse to publish a top ten when that number is too small.
Why not rank by reviews?
Review counts favour products that have been on sale longest, and star ratings on Amazon cluster so tightly between 4.1 and 4.6 that they separate almost nothing. Sales rank at least measures what people actually bought. We show the rating alongside because it is useful, not because it decides the order.
Before you buy
- Belts, tension and layer shifts
- Build surfaces compared: PEI, glass and textured plates
- Calibration tools: calipers, gauges and what you actually need
- All 3D scanners we track, ranked by current sales position