Given a text passage as input comprising of dialogue of negotiations between a seller and a buyer about the sale of an item, your task is to classify the item being sold into exactly one of these categories: 'housing', 'furniture', 'bike', 'phone', 'car', 'electronics'. The output should be the name of the category from the stated options and there should be exactly one category for the given text passage.

Buyer: Hey, I was interested in the kid's bike you have listed for sale. It looks like it's in decent condition, but with you being the second owner and all, $20 seems a little high. Would you consider taking $10?
Seller: Hi we are the second owners but it's well taken care of. I even have the hardware to put the training wheels back on. 
Buyer: I think the highest I'd be willing to go is $12, but I'll come pick it up myself. 
Seller: I can do 15 since I did do some work on it to make it in top shape. Still a great price that covers my costs. 
Seller: 
Buyer: That seems fair.
Buyer: 

bike