Dear Khalil,
Guidance value or Guideline Value of any land should truly reflect the market value. Guideline values have been fixed for all the areas in the State. This guideline values help the registering officer in the detection of prima facie under valuation of property.
Actually all the property related transactions are to be carried out at the Guidance value. Practically it never works out. So Market price of the property is the price at which both seller and buyer agrees to do the transaction. Generally the market price is greater than Guidance Values.