Methodology

The short version

Espresso Receipt is a constraint-first matching system, not a taste-test leaderboard. We verify product facts, reject combinations that fail the shopper's hard limits, then rank the remaining setups for drink style, workflow, throughput, grinder control, and budget use. The receipt shows the source records, model version, assumptions, and known compromises behind the result.

Four evidence labels

Manufacturer

A specification or claim published by the product manufacturer for the named U.S. model.

Authorized retailer

A price, warranty, or regional specification from an identified authorized U.S. seller.

Modeled

A value calculated by Espresso Receipt from disclosed inputs; it is not a measured product fact.

Unresolved

A conflict, missing field, or measurement definition we could not reconcile without guessing.

How a product enters the catalog

1. Identify the exact U.S. model, SKU when public, voltage, and current product generation.
2. Prefer the manufacturer page or specification sheet for physical and technical facts.
3. Use an authorized retailer for regional price or warranty when the manufacturer does not publish it.
4. Preserve source wording for claims such as warm-up time instead of silently upgrading the claim.
5. Record the URL, publisher, evidence class, and date checked for every source record.
6. Keep conflicting or missing dimensions unresolved; do not average incompatible measurements.

Hard gates come before scores

A setup is ineligible when any of these checks fails:

• Total modeled setup cost exceeds the shopper's budget.
• Known closed or operating dimensions exceed the shopper's width, depth, or height limit.
• The machine's editorial back-to-back capacity band is below the requested session size.
• A separate grinder does not support the machine's known portafilter size.
• A visitor-selected owned grinder is not one of the exact verified catalog models.
• Required machine dimensions are unresolved.

Width for a separate machine and grinder is the sum of both listed widths plus a modeled 1.5-inch working gap. Depth is the larger operational depth when published; otherwise the closed chassis depth passes only with a visible working-clearance caveat. Height is the taller product. This is a first-pass fit check—not a substitute for measuring lid, reservoir, steam-wand, cord, and hand clearance. See the operating-envelope guide.

How eligible setups are ranked

Model version 1.1.0 begins at 50 points, then adds fixed weights for drink-profile fit, milk workflow, 58 mm workflow for espresso-first users, requested session capacity, user effort preference, grinder adjustment band, and sensible use of the stated budget. Ties go to the lower modeled setup total.

These weights express an editorial matching policy. They are not laboratory measurements and do not prove cup quality. Each result exposes up to three reasons plus the machine tradeoff and source caveats, and the complete named point contribution breakdown, so the shopper can disagree with the model rather than accept a hidden score.

Cost and break-even math

• Hardware total = current listed machine price + current listed grinder price, except a visitor-selected owned catalog grinder is counted at $0.
• Setup total = hardware total + a modeled $90 allowance for baseline setup items.
• Beans = 18 g per drink at $16 per pound.
• Milk = $0 for espresso, $0.48 for milk drinks, or $0.24 for a mixed profile.
• Water, energy, and cleaning allowance = $0.20 per drink.
• Monthly drinks = weekly café drinks × 52 ÷ 12.
• Break-even months = setup total ÷ ((café price − home variable cost) × monthly drinks).

Break-even is omitted when the inputs do not produce positive modeled savings. The model excludes resale value, financing, repairs, labor, tax, shipping, wasted coffee while learning, and café purchases the user continues to make.

An owned grinder is deductible only when the visitor selects an exact catalog model. Its verified footprint, adjustment band, source records, and portafilter compatibility remain in the calculation; only its acquisition price is removed. Integrated-grinder machines are excluded from that path because buying a second built-in grinder would not be a like-for-like machine-only recommendation.

Versioning and corrections

Result receipts carry both a model version and catalog version. A price refresh can change eligibility without changing the scoring policy; a model-version change means the matching logic or assumptions changed. Material corrections are handled under the corrections policy.

Methodology FAQ