While approximate land value calculators and charts are available online for most areas of the United States, sellers should use these figures only for broad estimation purposes. Arriving at a more exact price point to use as a listing price is best done by a real estate professional with a solid track record of successfully selling the type of land being sold.
One way you can do this is by using a third party escrow service like SafeFunds.com (I’ve never used them, but I know some who have and I’ve heard it works well). You could also give the cashier’s check to your mobile notary (if you’re using one) and they can deliver it to the seller after they’ve completed their documents. You could also just make a copy of the cashier’s check (to give the seller evidence that you have the money and it’s ready to go), and send this to them along with their docs to complete… and then you could mail it to them AFTER you receive everything from them.
Lack of advice or tools: You may miss an agent’s help throughout the process, starting with when you set a listing price. Online price calculators may not be sufficient to determine the fair market value of your home because they use completed sales, which tend to lag the market by a few months. Also, the algorithms don’t necessarily account for factors like curb appeal, landscaping, recent renovations, or school district lines.
I agree with Ellen Chung, finding the right type of buyer to target is very important. Also, you should consider the amount of time you have to sell the land. If you are short on time due to back taxes owed or other financial obligations, your best bet may be to talk to a vacant land investor. You will not get the full market price for your property, but the typically can pay cash and close quickly.