MicrostockGroup

I bought the bundle a few years ago and have only upgraded elements.  Premiere Elements is fine for editing clips for stock.  I switched to Sony Vegas movie studio but there isn't much between them.  It takes some time to learn to edit video but I didn't find it too difficult.

Thanks Sharpshot and rinderart.
At this point it's either Premiere Elements to save £20 or I'll just buy Photoshop elements on its own. I don't make enough videos, even entirely for my own use, to make anything else worthwhile at the moment.

on amazon i got both new for about the same cost of an upgrade to elements 10

I don't and I'm sorely missing the teacher's discount I used to get. Although I only got Photoshop Elements to teach a community education class, community education doesn't count as far as Adobe is concerned - but at least it's taxable - and I got it cheaper than on Amazon. 

Decided not to get Premiere: I'd forgotten about MovieMaker, and there will probably be a chance in future to run a class in MM. Some of my previous Live Photo Gallery students and my current Beginners Digital Camera students have indicated an interest in 'movies'.

Aside: From looking at photos from the current class, I can say without hesitation that the current crop of low-mid digital cameras, even though tiny and light, are not only much worse (for artifacting etc) than my old Fuji 5700, but also worse than the Finepix 2800Z my husband bought in 2001. (These are not 'photography students', but mostly people wanting to take photos of their grandchildren and holidays.) Frankly, I'm shocked. They also seem to be difficult to hold steady, though it was a dull afternoon when we had our first meeting (so I'm seeing the horrible artifacting with ISO400) . As I don't have one, I'm not sure how to advise on holding something about the size of a credit card, with no viewfinder, steady. 

Thanks for all the suggestions. Maybe some day. Still too busy getting to grips with Elements Organizer.