Yahoo relocation package. Is it normal?

I got an offer last week from Yahoo(Technical yahoo Sr). At the time of interview, I did not meet any HR person because the interview was scheduled at night. The manager gave me the offer after the interview and I accepted the offer. But this week I found the relocation package is not very good. I have to move the cars myself. Plus they provided no assistance/reimbursement for me to sell my house. Is this normal for company like Yahoo?

thanks