What is meant by "Share" and is the price per house?

Rooms for Rent or Shared Rental means that you will have one house for yourself and if there are common areas e.g., living houses, dining houses, etc. that you will be sharing with other tenants. The price lsited is normally the cost to rent the house out per month. Thus, if the said price is a $1000 then you portion of the rent is $1000.