The cost for vector storage is $0.10 per GB per day, with the first GB being free. This means if you store files that collectively use up to 1 GB of vector space, there is no charge. Any storage beyond this free 1 GB is charged at $0.10 per GB each day. For example, if you store 2 GB of data, you will be charged $0.10 per day for the additional 1 GB (OpenAI Help Center) (OpenAI Developer Forum).
Yes, if file is not search, normal price will be charged depending on the model you use.