Submitting a small number of frames before submitting your full range is a great way of testing that your scene as well as projecting the usage cost of your project!
To render most efficiently please submit a small range of some of the more intensive frames of your job. If your job does not error you should also have a better idea of how long your full scene will take to render.
As well as estimating time, please allow a few hours for usage costs to update on your My Account page. With this value you can extrapolate how much your full project will cost with the most accuracy.
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