I'm very familiar with the 2776 plan. I've sold several of them. I'm going to assume that you chose no upgrades since you didn't add the garage option. It will be tough to get $400,000. The last one of these I was involved with sold for $299,000 after 2 years on the market. It was out in Vaughn on 2.5 acres with a garage. I see you have only three photos of your home posted. You need more. You should be contacting your agent with any questions regarding marketing.