If it is just for a domain name, then there is no "pricing breakdown." Once a sales price is agreed to, Buyer pays Seller then Seller transfers the domain name to the buyer. If it is a higher dollar sale, then Buyer puts money into escrow (Escrow.com or Payoneer.com), Seller transfers domain name to Buyer, then money is released from escrow to seller. Again, escrow is only used for higher dollar sales, and buyer and seller can negotiate who pays the escrow fee - can be split, but if one side is insisting on escrow while the other is not, then the side that really wants the escrow pays the fee.
Good luck with the sale!