I found this paragraph within an article on the Consumer Reports website and you can read it further by clicking on Consumer Reports.
"You can negotiate the fee. The usual 6 percent commission that agents charge sellers has been standard for so long that many homeowners apparently don't realize it's negotiable. But 46 percent of the sellers in our poll attempted to negotiate a lower commission and roughly 71 percent of that group succeeded.
RE/MAX and independent agents appeared to be a bit more willing to deal; 77 and 76 percent, respectively, of sellers who tried to negotiate with them were successful. Sixty-seven percent of Century 21, Keller Williams, and Prudential agents also lowered fees, as did 64 percent of the Coldwell Banker agents.
We found that paying an agent a lower commission rarely had any effect on the sales price. And readers who paid commissions of 3 percent or less were just as happy with their brokers' performance as those who paid 6 percent or more. People who paid extra, in fact, were more likely to say they had regrets about the selling process. The biggest regret? Nearly one-third said they should have been more assertive in negotiating their agent's fee." Consumer Reports, Sept 2008
The point of the post is to be prepared with your scripts when the consumer starts this discussion. What is your marketing plan, what is your technology plan and how much value do you bring to the table and display the differentiation to justify the increased commission.
Make it a profitable day