Classifieds are free - the only exception being professional real estate ads which are priced at $15 per 60 days.
For another $15 you get your ad sticky near the top of the home page for 60 days.
Payment is via PayPal and they accept all major credit cards, you do not need to register with them to make a payment.
All ads will last for 60 days and then be deleted. You may repost your ad when it expires if you wish.