The honest answer: less than agencies imply
Shopify Plus pricing starts north of $2,000 a month, and nothing sharpens an agency's sales copy like a customer who has just demonstrated they will spend $2,000 a month. Hence the pitches claiming Plus "unlocks SEO". Mostly it does not: the URL structure, the robots controls, the theme layer and the sitemap behave the same as standard Shopify. Google does not check your billing tier. A store does not rank better for being on Plus.
What Plus changes is scale and edge cases — and three of them genuinely matter for organic performance. Genuinely, as in: not invented for the proposal.




