> I believe the Pila can technically do the above, although its battery capacity is probably too small to ever recoup its purchase price on this type of arbitrage.

That's my point, thank you for putting it so succinctly. The front page opens showing the Pila being used for a refrigerator — presumably doing load shifting, given the front page marketing copy I quoted — so I think asking for data showing that this is a legitimate use case is fair.