← Level 2 – Shopper

4 / 12 ⏱ 16 minutes

“Free” with postage

Free postage from an amount. Under it you pay the journey. Free rarely means zero.

Free often means: pay somewhere else

The word free pulls the eyes. Free postage from 499 Kč means: under 499 you pay the journey, over 499 you buy more so you “save”. Sometimes you save. Sometimes you buy things you do not want, for more than the postage was.

A shopper adds: price of the goods + postage − (whether you want it). Not: the sign FREE.

Filip: a toy 120, postage 89, “free from 500”. He adds random things up to 500. He pays 500. He wanted 120. Eliška: 120+89=209, or she waits and buys in a shop for 120. 209 < 500. Filip won the sign. Eliška the balance.

A game “first purchase free” often turns a card on for next time. Free is bait.

💡

Count goods + postage. Compare with the envelope. Only then “from 499”. If you would buy extra waste, rather pay postage, or do not buy.

Bait zero

Free is a marketing word. A true zero exists (a gift, a parent’s shared ticket). A fake zero hides spending: postage, a second month, data, agreement to an email.

Postage is spending like juice. It belongs in the notebook when it comes from pocket money. When a parent pays a web shop, it is their envelope. You do not order extras up to 499 from their card.

“A discount + free postage + only today” is pressure. Take it apart into numbers. Time can wait. Numbers cannot.

A pickup point and the post have their own rules. A parent chooses. You do not go alone to pick up for a discount when that does not hold at home.

Eliška wants to shorten it to “it will be fine somehow”. Filip asks what the lesson “Free” with postage is for, when a table can do a sum. A sum does not count respect, a PIN, a trap or an envelope. The core is: Add goods and postage. Free from an amount can force waste.

Adults pay the rent. The card, the account and the PIN belong to a parent. A child’s email does not belong here. Pocket-money numbers do not belong on the network. If you break these rules in the lesson ““Free” with postage”, you know a word, not the course.

120 + 89 = 209. Extras up to 500 = 500. Waste 291. Eliška writes it. Filip sees 291 of waste. The sign free cost 291.

For practice: goods 50, postage 99. 149. Envelope 80. It does not go even free from 200, because 200 > 80.

Practice numbers, not a bank statement. Eliška has 80 Kč in the want envelope. Filip pushes a step this lesson can name. When Eliška uses the core, either it waits for a parent, or it fits the envelope. If not, anger and a hole are left — proof of pressure, not that the lesson is pointless.

⚠️

Free for a phone number, a photo of a parent’s ID or a code from a bank — stop. That is not postage. That is collecting and a trap.

Why this right now

You are in the course Money with Martin, level Shopper. You can write numbers in a notebook or a table, but the topic is money and decisions, not Excel formulas. The account, the card and the PIN belong to a parent. A child’s email does not belong here. Do not put pocket-money numbers on the network.

This is not the Sheets with Martin course. A table may help, but the mark of success is a decision, not SUM.

You will know this lesson by one sentence: Add goods and postage. Free from an amount can force waste. When you can say it to a parent or a teacher, you have the core. The rest is practice, not magic.

A game purchase and a subscription can use the same bait zero. First see postage. Then a click in a game.

If you skip this, the next lesson in level Shopper will stand on fog. You can do the sum 120+89. You see waste up to 500. The sign free is no longer magic. It is not a test for marks. It is a safety net, so ““Free” with postage” is not only a heading.

Four things you will build from the course

The course has four small projects. You do not have to do them all at once. Today you add only what this lesson can do.

🪙 Pocket money

A 14-day record: income, spending, balance. What you do not write down is as if you did not spend it — and that is a lie.

Pocket money: postage is spending. Write it, or “not from mine”.

🚌 Class trip

A budget, a reserve, a plan B. A shared till has rules.

A trip: “entry free, parking 200” — adults pay parking, but the number belongs in the plan.

🎮 Game shop

V-bucks and a loot box are a purchase. A subscription keeps going.

A game: first purchase free often starts a card. A parent’s lock.

🧾 Stall / mini-company

Cost, price, profit. Three numbers for the class.

A stall: “lemonade free with a purchase” must have a cost. Otherwise a loss.

Workshop: goods plus the journey

Practice two numbers. Add them. Compare with extras up to a free-postage limit.

  1. Goods 120, postage 89. The sum. Extras up to 500. Which number is waste, when you only want 120?

  2. Envelope 200. Does 209 pass? Does 500 pass?

  3. Find the sign FREE on a flyer. What is hidden?

  4. No email for free postage.

You count with a sum. A sign zero with no sum is hypnosis. Hypnosis does not belong in the notebook as a win.

Pocket money: Pocket money: postage is spending. Write it, or “not from mine”. Do not write someone else’s amount, a PIN, an IBAN or “how much a classmate gets” next to it. A rule and a practice number are enough — or an honest zero.

Class trip: A trip: “entry free, parking 200” — adults pay parking, but the number belongs in the plan. Do not write someone else’s amount, a PIN, an IBAN or “how much a classmate gets” next to it. A rule and a practice number are enough — or an honest zero.

Game shop: A game: first purchase free often starts a card. A parent’s lock. Do not write someone else’s amount, a PIN, an IBAN or “how much a classmate gets” next to it. A rule and a practice number are enough — or an honest zero.

Stall: A stall: “lemonade free with a purchase” must have a cost. Otherwise a loss. Do not write someone else’s amount, a PIN, an IBAN or “how much a classmate gets” next to it. A rule and a practice number are enough — or an honest zero.

Practice: zero, or hidden spending?

Add. Decide.

  1. 120 + 89 vs. extras up to 500. When do extras make sense?

  2. Envelope 80, goods 50, postage 99. What?

  3. Free for a code from an SMS. Why not?

  4. Why is a parent’s card not a reason to buy extra waste?

Now you 💪

Go through three checks. By each one, tick in your head: do I see it, or not?

  1. I can add goods and postage.
  2. A limit “free from” can be dearer than postage.
  3. Zero for details is a trap.

If something is missing, go back to the steps above. It is not a test for marks. It is a safety net, so you go on with certainty, not with a mess.

Check: You can do the sum 120+89. You see waste up to 500. The sign free is no longer magic.

What to take from this lesson