Updated 27. 8. 2026
All our products are digital — ebooks in PDF format. Nothing is shipped by post and there is no shipping fee.
Right after a successful payment, an order confirmation with the ebook attached is sent to the e-mail address you entered at checkout. It usually arrives within a minute, at the latest within 24 hours.
If the e-mail doesn't arrive, check your Spam / Promotions folder and write to us at info@gbdix.sk — we'll resend the ebook.
You pay online through the Comgate payment gateway. After clicking “Pay” you are redirected to the gateway's secure page, where you choose a payment method. Prices are in euros including VAT.
Card payment — Visa, Mastercard, Apple Pay, Google Pay
The fastest option. We accept Visa and Mastercard debit and credit cards; on supported devices you can also pay with Apple Pay or Google Pay without typing any details.
A detailed description of card payments is in the Comgate guide.
Bank buttons — instant transfer from your online banking
If you'd rather not enter a card, pay straight from your bank. You pick your bank, the gateway redirects you to its online banking with a pre-filled payment order, and you just confirm it.
Read more about bank-button payments in the Comgate guide.
Payments are processed in euros (EUR). For cards held in another currency, the conversion and any fees are set by your bank.
Online payments are provided for us by the Comgate payment gateway. The service provider, Comgate, a.s., is a licensed payment institution supervised by the Czech National Bank. Payments through the gateway are fully secured and all information is encrypted. Learn more on the Comgate payment gateway page.
Further information and contacts are available at www.comgate.eu.
Comgate, a.s.
Gočárova třída 1754/48b, 500 02 Hradec Králové, Czech Republic
E-mail: podpora@comgate.cz
Tel.: +420 228 224 267
Questions or complaints about the payment itself (e.g. an amount charged without a confirmation) go directly to Comgate support at the contacts above. Questions about your order or the ebook go to us.
Card details are entered only on the payment gateway's page — GBdix never sees or stores them. Card payments are protected by 3-D Secure and the communication is encrypted.
The ebook is delivered only after the gateway confirms the payment, not when you return to our website — so an order cannot be abused.
The order confirmation with the billing details you entered at checkout is part of the e-mail with the ebook and serves as your proof of purchase. If you need a company invoice, tick “Buying as a company” at checkout and fill in your company and tax IDs.
Withdrawal terms for digital content and our 14-day satisfaction guarantee are in the terms and conditions.
GBdix s. r. o.
Mlynská 14, 040 01 Košice
IČO: 55 039 383 · DIČ: 2121845418
E-mail: info@gbdix.sk · Tel.: +421 905 796 106