FSBO vs MLS pricing

[Andrey Y.]

How come all these folks who are selling via FSBO seem to price their property on craigslist the same as the asking price one would ask on the MLS with an agent? Don't they know that they would have to pay the buyer's and seller's agent 6% of the contract price if they sold via the MLS. At least this much should be subtracted from their asking price if they are trying to sell FSBO, given they won't have nearly as much advertisment and nil representation. How do you approach the FSBO seller in negotiating, to tell them nicely that they cannot be pricing a FSBO the same as it would be priced on the MLS.