What is the most expensive object on the game so far?

I've played a retail shop for awhile and noticed that NCp/Townie Sims don't always buy the most expensive things. Sometimes quantity is better than quality. ;)

That being said, it you only want to sell the most expensive things, then just sell the most expensive couch, fridge, chair, stove, painting(s), etc...

EDIT: What I mean is no one was buying anything when I had only the most expensive stuff up for sale. As soon as I put in a variety then they started buying the low to mid-grade items and finally occasionally a high price item.