Quick takeaway: Use this guide as general information. Product features, prices, eligibility and terms can change, so verify the current details with the relevant provider before acting.
A low price is not enough to establish that an online offer is genuine. Verify the merchant and the terms before paying.
Verify the merchant
Check the legal/business information available on the site, customer support details and whether the checkout domain matches the merchant you intended to use.
Review the policies
Before paying, read delivery, return, refund and cancellation terms. Be especially careful when a discount has unusual exclusions.
Use sensible payment hygiene
Use trusted payment methods and avoid sending card details through chat or email. Keep order confirmations and transaction records.