There are those who don't know how good they have it, and there are those who think they have it better than they've got. This couple fell into the latter grouping.
When u/IBSmeansnopizza was looking to move closer to his parents, he found a house that seemed pretty overpriced close to his parents. The signs were all there that the couple (showing their own home) might be challenging to deal with. The couple thought they smelled blood in the water when u/IBSmeansnopizza told them that he wanted to move closer to his parents. He notes that they must have assumed he was desperate.
Their behavior after the viewing would ultimately lead to their downfall. When u/IBSmeansnopizza submitted an offer that they felt was fair, the couple took an entire week to decline it. The couple then refused to consider the follow-up offer as they "Hadn't even started looking for a house yet."
u/IBSmeansnopizza gave up and found another house. He then discovered that the couple's home was still on the market six months later...