The Friendship Formula: Add great friends, subtract toxic people and multiply your happiness
The Friendship Formula: Add great friends, subtract toxic people and multiply your happiness
Overall Rating: 4.8 / 5 (average from multiple review sources, as of 13 May 2026)
Based on a total of 252 customer reviews from independent review platforms.
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The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
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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 252 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
Usually dispatched within 8 to 9 days
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£16.46
Free Delivery
The Friendship Formula: Add great friends, subtract toxic people and multiply your happiness
Overall Rating: 4.8 / 5 (average from multiple review sources, as of 13 May 2026)
Based on a total of 252 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 252 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.
In stock
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£19.59
Delivery from £2.80
The Friendship Formula: Add great friends, subtract toxic people and multiply your happiness
Overall Rating: 4.8 / 5 (average from multiple review sources, as of 13 May 2026)
Based on a total of 252 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 252 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.
Usually dispatched within 5 to 6 days
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Mastercard
£23.69
Free Delivery
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The Friendship Formula: Add great friends, subtract toxic people and multiply your happiness - Details
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We have found 3 prices for The Friendship Formula: Add great friends, subtract toxic people and multiply your happiness. Our price list is completely transparent with the cheapest listed first. Additional delivery costs may apply.
The Friendship Formula: Add great friends, subtract toxic people and multiply your happiness - Price Information
- Cheapest price: £16.46
- The cheapest price is offered by Amazon-marketplace.co.uk. You can order the product there.
- The price range for the product The Friendship Formula: Add great friends, subtract toxic people and multiply your happiness is €£16.46to €£23.69 with a total of 3 offers.
- Payment methods: The online shop Amazon-marketplace.co.uk supports: Direct debit, Visa, Mastercard
- Delivery: The shortest delivery time is Usually dispatched within 8 to 9 days working days offered by Amazon-marketplace.co.uk.
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