| Seller identity | Confirm the seller’s legal identity, physical or registered address, and a working way to contact them. | Business registration details where applicable, a verifiable address, and contact information that matches the order documents. | No identifiable seller, inconsistent contact details, or pressure to complete the purchase through an unrelated channel. |
| Authorization and supply chain | Ask whether the seller is authorized to supply the product and how the item was obtained. Do not assume authorization without evidence. | Written confirmation of authorization, supplier documentation, or traceable transaction records, where available. | Claims of authorization that cannot be independently checked or refusal to provide basic sourcing details. |
| Product identity | Confirm the quotation and order identify the exact model as LYPA-208C, including any relevant configuration, accessories, and quantity. | A detailed written quotation, product specification, and order confirmation showing the model and included items. | Vague descriptions, a substitute model without consent, or differences between the listing and the invoice. |
| Authenticity and condition | Ask how authenticity can be checked and whether the item is new, used, refurbished, or otherwise reconditioned. | Clear, current photos of the actual item and packaging; serial or batch details if applicable; and written condition disclosure. | Stock images presented as actual-item photos, altered or missing identification details, or undisclosed wear or refurbishment. |
| Specifications and compatibility | Compare the seller’s written specifications with your intended use, required interfaces, operating conditions, and applicable local requirements. | A dated specification sheet and written answers to any compatibility questions that matter to your application. | Unverified performance claims or answers that do not address your stated requirements. |
| Price and payment | Check the total payable amount, currency, taxes, shipping, and any other charges before ordering. Use a payment method with clear records and dispute procedures. | An itemized quotation and written payment terms, including the recipient and payment reference. | Unexpected fees, payment instructions that change without explanation, or requests for irreversible payment without adequate documentation. |
| Warranty and support | Confirm whether a warranty applies, who provides it, its duration, what it covers, and how support requests are handled. | Written warranty terms and contact details for the party responsible for service. If no warranty is offered, obtain that in writing. | Verbal-only promises, unclear exclusions, or no stated process for warranty claims. |
| Returns and refunds | Check the return window, eligibility conditions, refund method, restocking charges, and who pays return shipping. Terms vary by seller and jurisdiction. | The seller’s written return policy, saved before payment, plus any order-specific exceptions. | No accessible policy, unclear deadlines, or important conditions disclosed only after purchase. |
| Shipping and inspection | Confirm dispatch timing, delivery method, tracking availability, packaging, and the process for reporting damage or an incorrect item. | Written delivery estimate, tracking commitment, and instructions for documenting shipment damage or discrepancies. | No clear delivery estimate, no shipment records, or no stated procedure for damaged or incorrect goods. |
| Records before purchase | Keep the listing, quotation, product details, policy terms, payment confirmation, and seller correspondence together. | Dated copies or screenshots and a final invoice that matches the agreed model, price, condition, and terms. | Key promises are not included in the final written order or cannot be retrieved later. |