You do not need to enter your credit card information unless your credit card expiration date has passed.
You may not have noticed these, but most infant car seats have an expiration date.
Use caution buying a used car seat at garage sale or in thrift stores and look for this expiration date.
Many times the offer has an expiration date and a maximum allowable purchase.
It's a good idea for cardholders to stay aware of their expiration date so the balance can be used up prior to the card expiring.