Reselling Operations: sourcing, listing and inventory

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For a grown-up: Claude is for adults (18+). Copy this, paste it into Claude, and use the answer to explain the lesson to your child.

I'm learning "Reselling Operations: sourcing, listing and inventory" on The Future Market. Lesson 1: "Your maximum buy price".

What the lesson teaches:
- Before this course: Consignment & Reselling Business (course 2.15). You already know the difference between reselling and consignment, how to research sold prices, write a listing and check for recalls. This course turns that into a repeatable operation.
- Maximum buy price = what you expect the item to sell for (based on sold prices) - platform and payment fees - shipping you pay - packaging - the profit you want to keep.
- eBay Canada fees (most categories, in CAD, checked 2026-11-12). The first 250 listings each month are free, then CAD 0.30 each. The final value fee is 13.6% of the total sale amount up to CAD 7,500 per item (plus 2.35% on any part over that). Per order fee: CAD 0.30 for orders of CAD 10 or less, CAD 0.40 for orders over CAD 10. The total sale amount includes the item price, handling, buyer-paid shipping and sales tax. Other fees can apply (for example currency conversion of 3.25% for sellers with a Canadian address, and international fees). Fees change, so check the page each time.
- Other channels. Course 2.15 lists no fee on Facebook Marketplace local pickup and a table or booth fee for in-person sales. Time, gas and any table fees are still costs. Always check the current fee page.
- Sell-through. Out of the items sold plus items still unsold, how many sold? A high sell-through means buyers want that kind of item. Check sold listings, not asking prices (as in course 2.15).
- Your time is a cost. If one hour of sourcing and listing produces CAD 5 profit, the time was not worth it.

The exercise I'm working on:
Pick three items. For each, find sold prices, check the fees on the platform you would use, and calculate the maximum buy price.

I'm stuck. Please:
1. Explain the main idea in plain, simple words with one everyday example.
2. Walk me through the exercise one small step at a time. Ask me what I've done so far before giving the next step.
3. Don't just give me the final answer. Help me do it myself, and check my work when I share it.

I'm a parent helping my child (about 8 years old) with a lesson called "Your maximum buy price" from the course "Reselling Operations: sourcing, listing and inventory".

Here's what the lesson says:
Before you buy a toy to sell, ask: "After I pay the fees, the shipping and the box, how much will be left? And how much do I want to keep?" What is left over is the most you can pay for the toy.

The activity:
Pick three items. For each, find sold prices, check the fees on the platform you would use, and calculate the maximum buy price.

Please explain this so an 8-year-old understands: short sentences, a fun everyday example, and no hard words.
Then give me 3 simple questions I can ask my child to check they understood, and a way to do the activity together, one tiny step at a time.