not sure who that second party is.... But you really need an experienced local Realtor, who is very familiar with your kind of size of home, location, lot size and any upgrades and amenities in the home. Each home is different, and in this market, it does not really much matter what you think your home is worth, it really matters what the market at this time can bear and what a ready and willing buyer is ready and willing to pay for it....
The higher your asking price the longer it will take. But before you even can make a decision on what is current market value, you MUST consult with an experienced area Realtor and get a detailed market analysis, 1800 sq.ft. does not seem to be a very large home, but then lot size, location, views and upgrades etc. make always a difference, but this is a very different market from a few years ago.
Consult with an experienced agent, if you do not know anyone select one of the agents who answered you your question or contact me I could refer someone to you.
Edith Karoline YourRealtor4Life! & YourChicagoConnection
Working always in the very BEST interest of her clients!