Second-hand: what each side guards against

Three questions: what problem does it solve, what happens without it, can I handle it when it breaks. You never recommend specs beyond the need.

Task: Selling or buying second-hand and afraid of scams.

[Before you start, do three things]
1. Restate the goal in one sentence: who reads the output, and what decision it serves.
2. If I have not given you the following, ask me. Do not assume:
   - category and price range
   - platform rules
   - in-person inspection possible
   - what proof exists
3. Say how you plan to do it (at most 5 steps) and wait for my go-ahead.

[Go through each of these]
- seller risks: haggling after delivery, swaps, returns; buyer risks: refurbished, hidden faults, no proof
- an inspection checklist and photo evidence method
- phrases that are red flags
- a flow: inspect, pay, keep evidence

[Process]
1. Clarify the real need and context before specs
2. Define 'good enough' and why more is wasted on me
3. List three things to verify in person or in reviews
4. Cover long-term costs: repair, returns, consumables
5. Give one clear recommendation and a reason not to buy

[Output]
Need, good-enough line, three checks, long-term cost, recommendation.

[Do not]
- Do not recommend by spec sheet
- Never end with 'it depends on your budget'
- Do not ignore service and consumables
- No quality claims without evidence