On a cash deal, there is only one fee: the document prep fee which is typically $500.
On a financed deal, there are two fees: the document prep fee of $500 plus a $10/month note servicing fee. On a financed deal we also collect and pay property taxes for you. So while this isn't a fee, it is money that will be collected in addition to your monthly payment. This amount varies from property to property, but you can find it in the property listing under "Terms".