reselling profit finder
Evaluate resale opportunities using a structured framework to calculate net profit and assess market risk.
$5
Works with the AI tools you already use
Claude Code
Cursor
Codex CLI
GitHub Copilot
Gemini CLI+20 moreClaude CodeCursorCodex CLIGitHub CopilotGemini CLI
OpenClaw
Manus
Grok+17 agentsreselling profit finder
Example session with this skill installed
I found a Sony Walkman WM-F10 at a garage sale for $40. It looks clean but I can't test it. They sell for $150 on eBay. Is this worth buying to flip?
- Read your context and instructions
- Compiled the reselling profit finder
I have evaluated the Sony Walkman WM-F10 flip based on your $40 acquisition cost and the $150 estimated sale price. While the margin looks high, the "untested" condition introduces significant risk to your net profit.
Resale Decision Analysis
1. Decision Snapshot
The potential ROI is over 150%, but this is contingent on the device being functional. An untested unit often sells for significantly less than a refurbished one, and repair costs could eliminate your margin.
2. Inputs & Assumptions
| Item | Value | Status |
|---|---|---|
| Sony Walkman WM-F10 | $40.00 | Verified |
| Expected Sale Price | $150.00 | Supported (eBay Comps) |
| Platform | eBay | Hypothesis |
| Condition | Untested/Pre-owned | Verified |
3. Analysis
| Dimension | Score | Evidence | Why It Matters |
|---|---|---|---|
| Realistic Net Sale Price | 3/5 | $150 is for working units; $60-80 for parts. | High variance based on functionality. |
| Platform Fees | 4/5 | Standard 13.25% + $0.30 eBay fee. | Directly impacts take-home pay. |
| Sell-Through Confidence | 4/5 | High demand for vintage audio. | Fast liquidity if priced correctly. |
| Condition Risk | 1/5 | Item is untested; belts often fail. | Could result in a "For Parts" sale or return. |
4. Key Risks / Gaps
- Mechanical Failure: The WM-F10 is known for fragile gears and perished belts.
Return Exposure: High-value vintage electronics have higher-than-average return rates if they fail post-shipping.
- Shipping Sensitivity: Requires specialized packaging to prevent transit damage.
5. Recommended Next Move
Primary Action: Attempt to power the unit with a single AA battery at the sale before purchasing.
- Supporting Action: Check eBay "Sold" listings specifically for "Parts/Repair" to find your floor price.
- Supporting Action: Budget $15 for a replacement belt kit if you plan to refurbish.
6. Validation Plan
| Question | Evidence Needed | Cheapest Test | Pass Signal | Fail Signal |
|---|---|---|---|---|
| Does it spin? | Motor sound/movement | Insert battery | Audible motor | Dead silence |
| What is the floor? | Parts-only sold price | Filter eBay by "Sold" | Price > $60 | Price < $40 |
Next steps
- Verify if the battery compartment has corrosion.
- Download the eBay app to check the last 90 days of "Sold" history for this exact model.
- Decide if you are willing to spend $40 for a potential $20 profit if it's broken.
Connects securely to your tools. The creator never sees your data.
What you get
About this skill
The problem
Flipping items for profit often fails because resellers overlook hidden costs like platform fees, shipping, and return risks. Beginners frequently guess at market value using active listings rather than actual sold data, leading to bad buys and locked-up capital.
What it does
- Calculates net profit by accounting for acquisition costs, platform-specific fees, and shipping overhead.
- Analyzes sell-through confidence based on verified transaction evidence versus asking prices.
- Evaluates risk factors including condition uncertainty, fraud exposure, and capital lock-up duration.
- Provides a structured validation plan to test high-impact unknowns with minimal financial risk.
Why this beats prompting it yourself
General prompts often produce optimistic, vague advice that ignores the math of reselling. This skill enforces an evidence ledger that separates facts from assumptions, ensuring you never mix "hoped-for" prices with verified market data. It applies a strict scoring framework to every dimension of the flip, from logistics to liquidity.
Use cases
- Evaluating a potential thrift store find to see if the margin justifies the labor.
- Comparing multiple retail arbitrage opportunities to decide where to deploy limited capital.
- Determining the maximum "buy price" for a wholesale lot based on target ROI.
- Assessing the risk of high-value electronics flips where fraud and return rates are elevated.
Known limitations
Requires manual input of marketplace data if the agent does not have active search tools. It provides decision support, not legal, tax, or professional financial advice.
How to install
Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.
- 1
Download the ZIP
Free skills download straight away. Paid skills unlock right after purchase.
- 2
Unzip into your skills folder
Every agent reads skills from one folder on your machine. Drop the unzipped folder in there.
- 3
Ask your agent to use it
Restart the agent if it was already running. It picks the skill up automatically - no config needed.
Skills folder by agent
Click the path to copy it. Create the folder if it does not exist yet.
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Security scanned
Verified clean 10 days ago
- Passed all security checks, Safe to install