What type of streaming are you looking for? What file format and file size do you want to achieve?
On our site I just embedded the media player in the html page. This way you can watch the clip directly on our website. Another option we have is to click a link and you can download the file and play the clip on your local media player.
The cost is determined by the transfer rate your allowed per day I do believe. Most hosts restrict what you are allowed per day as well as per month.
NumbSkull Productions www.numbskullpro.com