In many of the countries, there is a limit after which the income is taxable. For example, here in India you can show income up to Rs. 50,000 as gift from strangers. After that amount, you need to pay taxes on the additional amount.
That's worth of $720, correct me with the exchange rate.
$1 = Rs 69.14
In some countries, that kind of amount should be taxed already whether it is a gift or in kind or income.