I would suggest that if you feel your REALTOR is giving you an unfair selling price to check around with a couple other agents to see if they come up with the same selling price. Also ask your REALTOR for specifics on how they came up with the price point.
We always suggest our clients to seek out at least 3 agent appointments before making a decision of who to list their home with. This way you will have 3 different agents presenting the comps to you, as well as getting to see each agents different approach to marketing your property. For instance we use professional photos for our listings where many agents do not, since the #1 complaint with Realtors is a lack of communication we have a communication guarantee we sign with our clients that we will contact them at least once a week to give an update, and if we don't we punish ourselves by giving the sellers a $500 credit at closing. Is the agent going to market your property online? flyers? etc.
We as Realtors offer market analysis to all our prospective clients for free. I highly recommend taking the time to interview at least 3 agents before picking one to list your home.