don't you think going to an exchange account to trade it is more better?
or could it be you are afraid of transaction fee or possibly you don't wanna reveal your identity to an exchange?
How much do you think he can get after swapping them across exchanges? If you don't know, it will cost him a few dollars to send BTC to the exchange. Somewhere around at least $ 10, next, we can ignore the conversion fee, but we have to take into account another cost, which is the fee for withdrawing money from the exchange. It is about 0.01 ETH so that ETH can be withdrawn from an exchange. It's not even enough for a fee.