It seems like minimum tx fee is around .001$ in Ethereum (maybe a little bit less) but I was wondering about the possibility of performing zero fee transactions, mining them by myself. Obviously, sending txs with gasPrice = 0 is useless because miners are not going to give them any priority, but ...
What if I change that priority in my own node?
Can I specify somehow on geth to mine with priority my own zero fee transactions?
Is it possible to send transactions with gasPrice = 0?