RapidShare is basically a German One-click hosting site that operates from Switzerland and is financed by the subscriptions of paying users. It operates as a pay service, allowing any member to upload files of up to 100MB. The user is then supplied with a unique download URL, which locates the file and enables anyone with whom the uploader shares it to download the file. Like a MIRROR site
This site goes into more detail --
What's Rapidshare? How to Use Rapidshare?
So how much does it exactly cost? Well depending on how long of a subscription you want you can expect to pay anywhere from 10 dollars for a 1 month subscription, or around 23 dollars for a 3 month subscription. You can also get subscriptions up to 1 year.