Conciseness

The 28-line body is lean and operational throughout — "Bucket it: mechanical (rename, format), standard coding, hard reasoning...", "files touched × average size; state the assumption", and the inline price roster carry information Claude does not already know, with zero padding or explanation of known concepts. Every token earns its place.

Actionability

Guidance is highly concrete for an instruction-only skill: explicit classification buckets, per-seat prices (e.g., "Claude Sonnet 5 (2/10 USD)"), decision rules ("Mechanical work goes to included or budget seats"), and a specified three-row spread table. Minor gaps remain — pricing defers to "the cost table in CLAUDE.md" rather than being fully self-contained, and the volume-estimation formula is left as an assumption to state — so it is not a 5.

Workflow Clarity

Steps 1-6 are clearly sequenced (classify → estimate → price → recommend → check risks → show spread) with real checkpoints: the risk-surface escalation list and "If the estimate exceeds 1 USD, say so explicitly before any dispatch happens." It falls short of a 5 because there is no explicit validation or feedback step (e.g., sanity-checking the estimate or re-verifying the recommendation against the guardrails) — checkpoints are present but not looped.

Progressive Disclosure

Sections (When to use, Steps, Guardrails) are well organized and the body is appropriately short, but it references "`skills/blocks/fable5-prompting.md`" which does not exist in the bundle (no references/, scripts/, or assets/ directories), and it depends on an external CLAUDE.md cost table. A dangling, unresolvable reference path keeps this at "some structure but could be better organized" rather than good.

Specificity

Quotes like "compare model costs for a described task", "maps task shape to the cheapest adequate seat", and "shows the price spread" list several concrete actions with only minor gaps (no mention of budget checks or model-selection variants). It is not a 5 because coverage of the capability space is thin beyond the three named actions, and not a 3 because it clearly exceeds 1-2 actions.

Completeness

The "what" is clear (compare model costs, map task to cheapest adequate seat, show price spread), but there is no explicit "Use when..." clause or equivalent trigger guidance; "for a described task" only weakly implies when. Per the judging guidelines, a missing explicit trigger caps completeness at 3.

Trigger Term Quality

Natural terms present include "compare model costs", "cheapest", and "price spread", which a user might plausibly say. Common variations and synonyms are missing — e.g., "pricing", "model pricing", "budget", "which model should I use" — so keyword coverage is only partial rather than good.

Distinctiveness Conflict Risk

The niche — cost comparison and cheapest-adequate-seat selection — is mostly distinct, with specific triggers like "compare model costs" and "price spread". Minor overlap risk remains with generic model-selection or model-recommendation skills, keeping it below a 5.