A few details needed.
Single Family Home or condo/townhome?
Cash Purchase or with a mortgage?
VA, FHA or Conventional?
A lot of the costs involved in a closing for a buyer involve the fact that there is a mortgage, and different loan types have different closing costs.
Buying a single family home for cash has very few costs involved for a buyer.
The buyer's estimated fees will be:
$800 approx. escrow
$75.00 approx. recording
prorated taxes (could be a credit)
prorated HOA dues (if applicable)
prorated fuel (if applicable-usually only for oil heat)
The costs escalate dramatically if you are financing the home and the type of financing changes what those costs will be.