[dba-Tech] webcasting

A major web publisher has contacted me twice about creating several webcasts
for them on a variety of Office topics. We couldn't come to terms. 

I'm wondering if this is something I could do myself without a huge outlay
of cash? I know someone who would could act as a server for storing the
files, so that's not a problem. All I'd have to do is produce the files,
upload, and come up with some kind of store front (the store front might not
be necessary either).  

Problem is, I don't know enough about it to know whether to keep
investigating. If I'm going to need expensive equipment and software, I'm
not going to bother, at least not right now. Seems to me I should be able to
produce a simple "movie media" type file and upload it -- but if it were
that easy, everybody would be doing it wouldn't they? I'm not really talking
about webcasting like uTube. Rather, I'd like to produce downloadable files
that purchasers view in their time offline -- rather like an email book.  

Also, how many of you actually pay for webcasts or similar?  

Susan H.