Compare completed-sale evidence
See this course’s project requirements
A fictional resale feasibility file with an item screen, cost model, comparable sales, listing brief, return scenario and go-or-no-go decision.
Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.
What to include
- A resale-item screen with exclusions and verification needs.
- An item cost sheet including fees, shipping and time. A comparable-sale note with a justified test price.
- An unpublished condition listing and package-measurement brief.
- A return scenario showing contribution, loss and cash tied up.
- A resale feasibility decision supported by the full cost and return model.
Review and revise
Use these criteria to check your work and choose what to improve.
- Calculations reconcile to the supplied records, with units and dates labeled.
- Assumptions and missing information are visible, including the changed scenario.
- The recommendation follows the evidence and explains an important limitation.
- The six lesson outputs form a usable handoff that another learner can check.
Want more background?
The idea in everyday life
Fictional completed sales of comparable used adult totes: C1 $24 delivered, good condition; C2 $25 delivered, good; C3 $26 delivered, good. A $40 asking-price listing has not sold. A $30 completed sale was new with tags and is outside the comparison set.
Comparable completed sales are more informative than asking prices, but condition and costs must still match.
Compare completed-sale evidence — worked practice
Comparable completed sales are more informative than asking prices, but condition and costs must still match.
Fictional completed sales of comparable used adult totes: C1 $24 delivered, good condition; C2 $25 delivered, good; C3 $26 delivered, good. A $40 asking-price listing has not sold. A $30 completed sale was new with tags and is outside the comparison set.
1. Filter
Keep the three used, good-condition delivered sales.
You should see: Comparable prices: 24,25,26.
Match condition and delivery basis.
2. Find median
Order the three values and choose the middle.
You should see: Median delivered price is $25.
The median is a compact reference, not a guarantee.
3. Reject false evidence
Mark $40 as unsold and $30 as a different condition.
You should see: Neither sets the comparable median.
An asking price does not establish buyer willingness.
4. Apply to T1
Retain $25 as a test assumption and note limited sample size.
You should see: The cost sheet uses an evidence-based fictional assumption.
Three records cannot guarantee demand or speed of sale.
What to finish
A comparable-sale note with a justified test price.
Watch for this
Using the highest unsold listing as proof of value.
How can I tell I understand it?
Explain your calculation or classification and reproduce the changed case without copying the worked result.
Quick knowledge check
Answer all 3 questions. Get at least 2 right and the lesson completes automatically.
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Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.
Go to the knowledge checkOptional course overview video · same video as Lesson 1
How to calculate Gross Profit (aka Gross Margin)
From Edspira. Watch here or open it on YouTube .
Optional course overview. Follow the written steps below at your own pace.Tools, templates, and lesson sources
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Sources and further reading
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Source & access notes · checked 2026-09-12
Inspected package measurement, preparation and postage inputs; no current rate is copied.
Access: Public page inspected without a sign-in; linked services may have separate requirements.
Reuse: Link to the original. Free reading does not imply permission to reproduce the page; lessons and fixtures here are original.
Source & access notes · checked 2026-09-12
Inspected fee categories and bases. The exercise uses invented fees, not an eBay rate quote.
Access: Public page inspected without a sign-in; linked services may have separate requirements.
Reuse: Link to the original. Free reading does not imply permission to reproduce the page; lessons and fixtures here are original.
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