I use the network, so I know it can be done at zero cost and even generate a profit.
In fact, I earn more interest from this stacking than by leaving money in the bank.
You just need to calculate your daily transactions and the amount of TRX needed to generate that energy and bandwidth. Then, buy the necessary amount of TRX and leave it in stacking. This generates passive income.
It's an initial investment with a cost that, if made years ago, could have yielded up to five times the return.
The only problem is the higher initial cost, and then you have to spread the payments over different days of the week instead of concentrating them on one.