I love to negotiate the best deals for my clients. First, I get personal satisfaction out of a job well done (I love that feeling!) and secondly, I have received 4 referrals just in the last six months because of how much my buyer clients love the deals I made for them.
Talking numbers. To put things in perspective. Taking 2.5% commission (one side) as example. Every $10,000 I negotiated for you, I am only losing 250 on commission. However, if you love the house I found and the price I negotiated for you and start referring clients to me and decide to use me again later, guess how much more commission I can receive - a lot more than the $250 I might lose.
So, yes, it's to my best interest to negotiate a best deal for you, for personal pride, relationship building, and future business growth. Looking for a short term gain is never my priority!