Well, I just found out about this, otherwise I would have posted it sooner for everyone. There is a great deal on online courses on this site, where most of them cost just $10 a course, and if you have older kids you might find one, or two, or many courses of value.
You can read reviews, and even do a preview and check out various videos throughout the course within a given time frame (I think you have 4 minutes or so to go through whatever sections you want.)
They have courses on languages, writing, computer stuff, and more. I haven’t had a whole lot of time to check it out yet, but I definitely will later today.
Anyway, I thought it might help some of you out there. Happy searching. Let us know if you find something you like!
*Edited: Sorry, I got the date wrong!