Insights

Supplement e-commerce glossary

Clear definitions of the marketing and e-commerce terms supplement and wellness brands use every day.

ROAS
Return on ad spend: revenue generated for every dollar spent on advertising. A ROAS of 4X means $4 of revenue per $1 of ad spend.
TACoS
Total advertising cost of sale: Amazon ad spend divided by total sales (paid and organic). It shows how dependent your Amazon business is on advertising.
MER
Marketing efficiency ratio: total revenue divided by total marketing spend across all channels. A simple, blended view of efficiency.
CAC
Customer acquisition cost: the average cost of winning one new customer, including advertising and marketing spend.
LTV
Lifetime value: the total revenue (or profit) a customer generates over their relationship with your brand. Crucial for repeat-purchase categories like supplements.
Subscribe & Save
Amazon’s subscription programme that gives shoppers a discount for scheduled repeat deliveries.
Buy Box
The “Add to Cart” box on an Amazon product page. Winning it means your offer is the default choice for shoppers.
GEO
Generative engine optimisation: making your brand easy for AI assistants such as ChatGPT, Perplexity and Google AI to find, trust and recommend.
Structure/function claim
A statement describing how a nutrient or ingredient affects the normal structure or function of the body, as opposed to a claim to treat or prevent disease.
UGC
User-generated content: photos, videos and reviews created by customers or creators, often used in ads and on product pages.
CRO
Conversion rate optimisation: improving a website so a higher share of visitors buy.
DTC
Direct to consumer: selling through your own website rather than through retailers or marketplaces.

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