Good for you for making sure you're informed!!! There are so many variables when it comes to the costs (i.e. the price of the home, taxes, how proration is handled, seller paid contributions to buyers, etc) that estimates on what sellers would generally pay as a percentage of their sale price would really be a stretch. I've heard some folks say 1%, but I've seen that be more the exception rather than the rule.
On top of that, throw in whether or not the transaction is lender mediated in some way, and then you've got a real pickle!!
I would ask your agent what the fees are for your particular transaction. If this is a traditional sale, those fees should include: 1. State deed tax
2. Title company fee
3. Real estate commission
4. possible proration of taxes
5. possible broker admin fee
6. conservation fee to state of MN
There may be other fees, depending on your particular situation, like your mortgage pay offs, interest payoffs, etc.
Agents can render a better opinion based on real case scenarios.