Delivery Policy

Last updated: 18 July 2026

All products are digital PDF files. There is no physical shipping — delivery is entirely electronic and instant.

How delivery works

1. You complete payment via Cashfree at checkout.
2. As soon as payment is confirmed, your confirmation page shows a direct download link for what you bought — a single PDF, or a “Download all (ZIP)” button for the full bundle.
3. The same download link is emailed to the address you provided at checkout, so you can access it later without keeping the confirmation page open.

Link validity

• The link shown on the confirmation page stays valid for 24 hours.
• The link emailed to you stays valid for 48 hours.

If both expire before you’ve downloaded your file, email support@techbooks.shop with your order id or checkout email/phone and we’ll send a fresh link — this does not count against your original purchase.

What you’re entitled to

A single-item purchase entitles you to that one PDF only. A bundle purchase entitles you to every title in the catalog, delivered as one ZIP file.

Not receiving your email?

• Check your spam/promotions folder.
• Confirm the email address you entered at checkout was correct.
• Still nothing after a few minutes? Email support@techbooks.shop and we’ll verify your payment and resend the link.