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Slide Rule Market Statistics

Current market data for 13,778 slide rules listed on eBay.

What you'll usually pay

$30 typical price

Most are between$9–$126

Brand new$27.26

Used$29.99

On sale now13,778

💡 Used ones cost about 10% more here.

👉 In short easy summary

The best value is found in Pocket Slide Rules, which trade 19% below the median. Circular Slide Rules command a premium, priced 15% above the market median.

📈 Price history

Tracked daily since June 21, 2026 — median $30 → $34 (+13%).

🔄 What changed

Aug 2▼ PRICEMedian price dropped 12% ($34.25 → $30)

Aug 1▲ PRICEMedian price rose 14% ($29.95 → $34.25)

Jul 29▲ PRICEMedian price rose 7% ($28 → $29.97)

Jul 28▼ PRICEMedian price dropped 7% ($29.95 → $28)

Jul 5▼ PRICEMedian price dropped 7% ($29.99 → $28)

💚 Best value for your money

Pocket Slide Rule 363 on sale$24.32 · 19% cheaper

K&E Slide Rule 1,236 on sale$25 · 17% cheaper

Price by featured refinements

Pocket Slide Rule

$24.32-19%

K&E Slide Rule

$25-17%

Not Specified

$29.99

Circular Slide Rule

$34.61+15%

Why? Price variance is driven by form factor, ranging from 24.32 for pocket models to 34.61 for circular rules.

🛒 Some on sale right now

Common questions

What is the median price for a slide rule on eBay?

The market median price is 30.

Are used slide rules more expensive than new ones?

Used models have a median of 29.99, while new models have a median of 27.26.

Which specific type of slide rule is the most affordable?

Pocket Slide Rules are the most affordable with a median price of 24.32.

How we got these numbers

Worked out from 200 live eBay listings (price range $9–$126, odd outliers ignored). These are asking prices, so use them as a guide. Last checked June 21, 2026.