Pricing

Clear routes, no public checkout pressure.

Grammar C and PQC Witness use a proforma route. PQC Core is quoted after suitability review. White-Glove Deployment is scoped only after successful PQC Core purchase and review.

Available now

Grammar C Core v2.2.5

£149

Structured evidence packaging for delivery, handover, rebuild validation and AI-assisted review.

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Managed witness output

PQC Witness Uplift

£995

Attessia-operated signed witness pack for an eligible Grammar C pack or agreed delivery artifact.

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Review-gated

PQC Core Self-Install

Quoted after review

Licensed customer-operated post-quantum signing and verification runtime for approved customers.

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Post-Core only

White-Glove Deployment

Scoped after PQC Core

Deployment support for successful PQC Core customers after approval, purchase and boundary review.

View support route Start with PQC Core

At a glance

Pay for the boundary you actually need.

Prices are listed in GBP. Attessia is a UK sole-trader business and is not VAT registered. Bank details are supplied only on private proformas or invoices.

Offer	Price	Route	Included boundary
Grammar C Core v2.2.5	£149	Proforma request	Structured evidence packaging, customer handover material, rebuild validation workflow and AI-assisted review support.
PQC Witness Uplift	£995	Proforma request	Attessia-operated witness output over an eligible evidence artifact. No customer access to PQC Core, keys, signing systems or infrastructure.
PQC Core Self-Install	Quoted after review	Quote / suitability review	Customer-operated post-quantum signing and verification runtime supplied only after customer, destination, end-user and intended-use review.
White-Glove Deployment	Scoped after PQC Core	Post-Core support only	Deployment planning, installation support, acceptance checks and handover notes after successful PQC Core purchase and review.