Listing commissions are always negotiable. But as the others have pointed out, in real estate, you tend to get what you pay for. I recommend speaking to a Realtor, whether it be me, or someone else. It doesn't cost you anything to ask questions, and it's easier to have a direct conversation with someone.
Feel free to call or email me, and I would be happy to discuss your individual situation.
how much service do you expect? What will your listing agent get? Listing agent often does more work than the selling agent (buyer's agent).