custom duty query/ about invoice

Aniket Phadke (-) (38 Points)

01 April 2011  

my friend is going to send me a parcel from usa. price of the item is $75. i.e 3500 approx.

i have read somewhere that if the sender is shipping the product along with the invoice while sending the package that would clearly say that this is a purchase and not a gift and would override the duty Free option and make the department to charge you. i want to ask -
do invoice have to be included in shipment? will there be any problems if the sender doesn't send the invoice with shipment?