Which box pays back
Street price comes back only if the tokens, at $1 per million, beat the watts. A Spark bought to resell that rate does not.
Inference, not a JEPA
A decode tok/s figure is a serving number. Training a JEPA, or drawing a picture, wants a different machine.
The interface is the argument
Three facts in the repo are the interface. The page shows two of them. It hides the rest.