Reviews and CDP add-ons
Reviews and Customer Data Platform are sold as separate SKUs that scale with order volume and profile count — the bill grows even when the core email plan is fixed.
What people actually say
✕Klaviyo Reviews starts at $25 per month and scales to roughly $20,000 per month for 1,000,000 orders, making it one of the priciest review platforms on the Shopify ecosystem.
Source: Retainful, Klaviyo pricing breakdown ↗✕Advanced KDP, marketed as a Customer Data Platform, starts at $500 per month for 100,000 profiles and Marketing Analytics adds $100 per month for up to 13,500 profiles on top of the base subscription.
Source: Retainful, Klaviyo pricing breakdown ↗✕Once total monthly Klaviyo spend exceeds $10,000 the account is forced onto Klaviyo One, which adds a mandatory 20 percent surcharge across the entire bill with no opt-out.
Source: Omnisend, Klaviyo pricing 2026 ↗
Reviews are a small Next.js widget posting to your own API, with photo upload to S3 and moderation in a Metabase view — no per-order tax. The CDP layer is just your Postgres profile store with event tables fed by Segment-compatible webhooks, queried by the same warehouse tooling. You add a use case by writing SQL, not by upgrading a SKU.