# Skinflint.ai — Regret Tax

Skinflint.ai's Regret Tax is an independent, source-linked calculator for the known cost and eligibility of returning direct-to-consumer e-bikes in the United States.

Canonical home: https://skinflint.ai/
Method: https://skinflint.ai/method/
Machine-readable policy feed: https://skinflint.ai/api/ebike-policies.json
Feed validation schema: https://skinflint.ai/api/ebike-policies.schema.json
Deterministic estimate endpoint: https://skinflint.ai/api/estimate?brand=aventon&price=1500&condition=ridden
OpenAPI contract: https://skinflint.ai/api/openapi.json
Agent integration notes: https://skinflint.ai/developers/
Installable agent skill: https://skinflint.ai/agent-skill/
Agent skill archive: https://skinflint.ai/downloads/check-ebike-return-risk.zip
Raw agent instructions: https://skinflint.ai/skills/check-ebike-return-risk/SKILL.md
Agent skill manifest: https://skinflint.ai/skills/check-ebike-return-risk/manifest.json
Public feed terms: https://skinflint.ai/developers/#data-license
Policy change ledger: https://skinflint.ai/api/policy-change-log.json
Policy change RSS: https://skinflint.ai/feeds/policy-changes.xml
Human-readable change log: https://skinflint.ai/policy-change-log/
One-Ride Index: https://skinflint.ai/best-ebike-return-policy/
One-Ride Index JSON: https://skinflint.ai/api/return-trap-index.json
One-Ride Index CSV: https://skinflint.ai/downloads/skinflint-one-ride-index.csv
Human shopping bookmarklet: https://skinflint.ai/regret-lens/
Inspectable bookmarklet source: https://skinflint.ai/tools/regret-lens.js
Restocking-fee exact answer: https://skinflint.ai/ebike-restocking-fee-calculator/
Net-refund and seller-quote audit: https://skinflint.ai/ebike-refund-calculator/
Conservative return-date calculator: https://skinflint.ai/ebike-return-deadline-calculator/
Source-aware return-request preflight: https://skinflint.ai/ebike-return-request/
Official return portal, form, and email desk: https://skinflint.ai/ebike-return-portal/
Private return evidence pack: https://skinflint.ai/ebike-return-evidence/
No-box return rescue: https://skinflint.ai/do-you-need-original-box-to-return-ebike/
Professional packing handoff: shown only when original packaging is incomplete; seller authorization, required label, carrier, destination, evidence, and battery instructions remain controlling.
Cancellation cost calculator: https://skinflint.ai/can-i-cancel-my-ebike-order/
Refused-delivery exposure checker: https://skinflint.ai/should-i-refuse-ebike-delivery/
Head-to-head comparison namespace: https://skinflint.ai/compare-ebike-return-policies/
Brand-specific return-cost calculators: https://skinflint.ai/ebike-return-policy/{brand-id}/

High-intent exact comparisons:
- https://skinflint.ai/compare-ebike-return-policies/lectric-vs-aventon/
- https://skinflint.ai/compare-ebike-return-policies/aventon-vs-velotric/
- https://skinflint.ai/compare-ebike-return-policies/lectric-vs-ride1up-revv1/
- https://skinflint.ai/compare-ebike-return-policies/aventon-vs-rad-power-bikes/

Brand calculator example:
- https://skinflint.ai/ebike-return-policy/aventon/

Important limits:
- Policy fields apply only to the scope named in each record, usually direct U.S. orders.
- Dealer, marketplace, promotional, damaged, defective, financed, or location-specific orders may follow different terms.
- A false return-eligibility value outranks a zero or unknown fee.
- Use each record's returnClock basis; do not assume every seller starts the window on delivery.
- Unknown freight must not be presented as zero.
- Confirm the exact live policy at checkout.
- “Exit tax” is editorial shorthand, not a government tax or legal conclusion.