Possible Clues:

• Better offer said to be unwholesome
• Sickly, unwholesome
• Showing unhealthy interest in higher-sounding offer
• Displaying an unhealthy interest in death
• Higher price offered, we hear, showing unhealthy interest
• Showing unhealthy interest in death
• Like black humor
• It sounds as if a higher offer has been made for what is so gruesome
• Preoccupied with gloomy or unpleasant things
• Preoccupied with gloomy things