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We can confirm that we charge on an hourly basis. You will be charged for all time that we incur on your behalf. This includes, but is not limited to, preparing for your matter, reviewing and preparing documents and meeting with you.
You need to revise by deleting unnecessary verbiage:
We charge on an hourly basis for all time that we employ on your behalf. This includes, but is not limited to, preparing for your matter, reviewing and preparing documents, and meeting with you.