When a quantity item is purchased, for example, raffle tickets, wine pull, games etc., you have the ability to force the guests to make the purchase right away. Turn this feature on under Software Settings > Auction Settings > Payment 

Note: For an auction opening early and bidding/purchasing happening prior to the event, this feature could be turned on and then turned back off when bidders are gathered at an in-person event. This allows the guest to check out everything all at once at the close of the auction. 

If the guest does not have a card on file it will prompt them to then add a card at the time of purchase.