Cloudify.ro implements the hourly payment. There is no minimum contractual period, a product can be used even for short periods of time (1 hour, 1 day, etc.), except for software licenses.
The Object Storage service allows you to use APIs such as AWS S3 or OpenStack Swift to store files in the cloud.
S3 Documentation* If you have an active VPS product, the first 100 GB of Object Storage will be free. Anything beyond the 100 GB will be charged according to the price listed below.
The price for Object Storage is flexible, being charged for each 1 GB