The Question and Answer section for The Grapes of Wrath is a great resource to ask questions, find answers, and discuss the novel.
Please check your chapter number for this question. Chapter Nine directly deals with the farmers selling their possessions.
Pa Joad's dream is lost with the farm. He is never the same, just going through the motions.
The novel protests the capitalist model of profit at the expense of the poor and desperate. Tom Joad's rousing speech at the end of the novel champions workers rights and a more socialist way of government.