The 20% Rule®: How to ensure your business is safe, sustainable and profitable
The 20% Rule®: How to ensure your business is safe, sustainable and profitable
Overall Rating: 1.3 / 5 (average from multiple review sources, as of 27 Jul 2026)
Based on a total of 67 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 67 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Cheapest Total Price
In stock
Direct debit
Direct debit
Visa
Visa
Mastercard
Mastercard
£8.00
Free Delivery
The 20% Rule®: How to ensure your business is safe, sustainable and profitable
Overall Rating: 2.3 / 5 (average from multiple review sources, as of 7 Aug 2026)
Based on a total of 47,264 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 47,264 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Cheapest Price
In stock. Express Delivery available with Amazon Prime.
Direct debit
Direct debit
Visa
Visa
Mastercard
Mastercard
£8.00
Delivery from £2.99
Cheapest offer
Pages: 164, Paperback, The Book Refinery
£8.00
In stock
Amazon-marketplace.co.uk
🤖 Ask ChatGPT
💡 Is it worth the price?
🔁 Better alternatives?
⭐ What do users say?
The 20% Rule®: How to ensure your business is safe, sustainable and profitable - Details
▶ Finding you the best price!
We have found 2 prices for The 20% Rule®: How to ensure your business is safe, sustainable and profitable. Our price list is completely transparent with the cheapest listed first. Additional delivery costs may apply.
The 20% Rule®: How to ensure your business is safe, sustainable and profitable - Price Information
- Cheapest price: £8.00
- The cheapest price is offered by Amazon-marketplace.co.uk. You can order the product there.
- The price range for the product The 20% Rule®: How to ensure your business is safe, sustainable and profitable is €£8.00to €£8.00 with a total of 2 offers.
- Payment methods: The online shop Amazon-marketplace.co.uk supports: Direct debit, Visa, Mastercard
- Delivery: The shortest delivery time is In stock working days offered by Amazon-marketplace.co.uk.
Similar products
The 80/20 Principle: Achieve More with Less: the essential guide to increasing productivity, effectiveness and results using the 8020 rule
£7.39
Amazon-marketplace.co.uk
Delivery from £2.99
Monitoring and Intervention for the Critically Ill Small Animal – The Rule of 20
£92.65
amazon.co.uk
Free Delivery
The 30-Day System to Master Any Skill Faster: A Practical Blueprint Using Deliberate Practice, the 80/20 Rule, and Proven Learning Science
£7.99
amazon.co.uk
Delivery from £2.99
Don't forget your voucher code:
Report Illegal Concerns
You are about to report a violation based on the EU Digital Services Act (DSA).