Lol just 1 kg sugar? In my lane the guy gives 1 month recharge plus a bluetooth headset free for ppl porting to Vi. Even if you consider it would be of cheap quality it would still be more valuable than 1 Kg sugar.
Not only VI, Airtel and JIo gives gift when you port your sim. In most of the road side stall you will get free goodies. In our area they are giving bluetooth headphones and speakers.