How much does a nursing home cost for alzheimers care?

What if you have a parent who is demented and you want to place them in a nursing home? How much is it? How much does medicare pay for? I am wondering, and they have a house but can't live in it any more because they are a danger to themselves so they live with me. Do you have to sell everything including their house to qualify for payment? Anyone with experience? Thanks

View this post on my blog: http://travelnursesuccess.com/how-much-does-a-nursing-home-cost-for-alzheimers-care