What would you say the best is ? <| sep |> You know that valve will benefit more if they sell something directly from valve store . So there is no reason that valve will sell through amazon . <| sep |> Jajajaja , hijo de puta ! Yo no me pelie con nadie , me vinieron a pelear , no es lo mismo <| sep |> Hilarious effort . I love the retarded propaganda they spew day and night . <| sep |> Not so simple . Multiple things cause errors in the EMdrive measurements , and increasing the power would correspondingly increase these errors lorentz force between wires , thermal expansion , induced air currents from thermal effects . <| sep |> I use mainly AppShopper , Where you can track the owned and wished app prices and updates on iPhone and web also . Another option is AppZapp but I find this to be bit overwhelming .