my property, 5.25 acres, has wet lands, how does this affect the price?

Areas of your property that are wet lands are generally not developable or buildable in most places. Many people like them as a natural buffer space, but you should not expect to get the same price for your house as a seller with a similar house on 5 dry acres. A local realtor in your area can be a great resource who will be familiar with this issue and how it specifically affects sale prices. Many will consult with you for free especially if you are thinking about selling.