Updated 8 September 2026

Terms, privacy and refunds

What you are buying, who sells it, how it reaches you, what happens to your data, and when you get your money back. Written plainly, with no fine print.

Terms of sale
Privacy
Refunds
Contact

1. Terms of sale

Seller: Lê Nguyễn Thị Ly (sole trader, Vietnam)
Product: Ebook Bí Quyết Mở Quán Nhanh — PDF, 5 parts, 14 chapters, written in Vietnamese
Price: 99,000đ (promotional day price) — list price 299,000đ
Ordering: Card payment through Polar; support on Discord
Delivery: Digital download, available the moment payment clears
Website: book.buildshipday.com

This is a digital product. Nothing is shipped. The book is written in Vietnamese throughout and studies the Vietnamese cafe market — please take that into account before buying.

Payment is processed by Polar Software Inc. acting as merchant of record, which means Polar is the official seller on your receipt and handles sales tax. The moment your card clears, Polar''s confirmation page carries your download link and a confirmation email follows. The link does not expire. You may download, print and read the book for your own personal or business use. Support afterwards happens on Discord.

You may not:

Resell, rent or redistribute the file in any form
Publish the book, in whole or in substantial part, anywhere public
Use its content to build a product that competes directly with it

Short quotations with attribution are fine and need no permission.

The book records the author's own experience and opinions in the cafe business. It is not legal, accounting or investment advice. Your results depend on many factors outside the book, so we make no promise of any particular revenue or profit.

2. Privacy

This is a static website. It sets no cookies, runs no analytics, carries no advertising trackers, and collects nothing from your browser on its own.

The only information we hold is what you send us when you order:

Your Discord account — your display name and the messages you send us
Email — if you ask for the download link by email

We use it only to confirm your order, send your download link and support you afterwards. We do not sell, trade or share your information with third parties for advertising.

Some third parties are involved and run their own policies: Vercel (hosting; keeps technical access logs including IP addresses), Polar (card processing and file delivery; we never see or store your card number), Discord (support) and Google Fonts (the page embeds webfonts, so your browser makes a request to Google's servers when it loads).

You can ask to see, correct or delete your information at any time — a message on Discord is enough, no formal process required.

3. Refunds

Seven days, no reason needed. If the book is not for you, message us on Discord within 7 days of receiving your download link and we refund the full 99,000đ.

You do not have to delete the file, prove you read it, or fill in a survey. We file the refund with Polar within 3 working days; the money returns on your card issuer's schedule, usually 5–10 working days. Refunds are sent within 3 working days, by the same method you paid with.

If you paid but never received the book, that is not a refund case — message us and we resend the link immediately. If for any reason we cannot deliver it, you get every đồng back.

4. Contact

Any question about an order, a refund or your data is handled on Discord:

Discord: Support server — main channel
Responsible person: Lê Nguyễn Thị Ly
Response time: Within 24 hours, usually much sooner