You will be notified as soon as a request to purchase is accepted or declined.
When submitting a request to purchase tickets a $1 authorization is processed to ensure the card you selected is valid. Once a request is accepted, the chosen card will then be charged the amount determined by the listing. After the request has been accepted, the Seller will deliver the tickets as their listing states (by providing shipping/tracking for physical tickets/wristbands, transferring the tickets to your associated account for digital tickets, or uploading the PDF into the message thread).
NOTE: The seller is encouraged, but not required to accept or decline a request within a certain time frame. So if other listings pop up, feel free to 'rescind' the current request and submit a new request on the new listing. If you have multiple active requests and they are accepted, each of those sales are locked in and cannot be canceled.