Why the Edge Is Small and the Cost Is Not
Three per cent sounds negligible, and per round it is. The reason sessions cost what they do is that the same three per cent is applied again to every round, and rounds arrive quickly. Sixty rounds an hour turns a small per-round share into a predictable hourly figure, which is why turnover rather than the edge is the number worth tracking.
This is also why no stopping rule rescues a long session. The rule changes how the results are shaped; the hourly cost is set by how much money passes through the game, and that is decided by stake and pace.
The Honest Version of a Strategy
Decide the hourly cost you are willing to treat as entertainment, then work backwards to a stake and a session length that produce it. It is the only calculation in this game that reliably does what it says, and it takes about a minute.
The stake side of that calculation is worked through on the stake sizing page, and the rest of the guides are indexed on the home page.