If its under $25 of free, I'd wonder. This is one of those "It depends." questions. From what I have seen, the cheaper they are, the less personal the subject matter and the less valuable. The content tends to either be quite general, which is often just fine, or it is little more than a teaser to try to sell something or some service. The teasers are pretty annoying.

I do not mind a program marketed as a basic introduction. That is different than a teaser which is marketed as an answer of sorts and turns out to be something else -- an on-line version of the free-dinner come ons. The clearer they are in their descriptions of content, the better. Generally, in life you get what you pay for. That may not help but without knowing the content details, value is just a guess.