Paying, invoices and receipts

Everything is prepaid. You see the full price, line by line, before you pay, and testing starts only once the payment has arrived. Nothing is ever billed afterwards.
Your invoice and receipt are on each engagement's page. Before payment the document is your invoice; once paid, the same document is your receipt. Download it as a PDF for your records. Its number is your order number (for example DP-100001), so your finance team needs only one reference.
Amounts are in US dollars. The invoice shows the tax line separately.
If your card is declined, nothing is charged and nothing else on your account changes. Open the engagement and pay again with the same or another card.
If a payment is taken back after it was made (a chargeback or a dispute with your bank, or a transfer that bounces), new tests and new purchases pause on the whole account until it is resolved with us. Your reports stay available to download.
A design-partner price, if we agreed one with you, appears by itself on the price page as its own line before you pay. There is no code to enter.
Card details never reach Duelpoint. You pay on the payment provider's own secure page; we only learn that the payment succeeded and its reference.