Welcome to the forum!
For lots of information about video shopping, just click on the blue link that has appeared below your post.
Asking how many video shops a v-shopper does per month is a little like asking, "What is your lifestyle?"  Every shopper's answer will be different.  One of the most important factors will be willingness to travel.  Another will be if you live/shop in a one party or a two party consent state, since one party states tend to have a ton of short video retail shops (at lower fees) that you will seldom, if ever, find in a two-party state.  Also, for long interactions (which pay the best fees) are you aware that you can only return somewhere between 2 years and never to the same location?  This means that you will be doing a lot of travel to do a lot of high fee videos.  
How many non-video shops have you done so far?  You would be well advised to have done at least ten each of the following non-video shops before trying the video versions: apartments, new homes, automobile sales with test drive, assisted living.
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service?  Don't get mad; get video.