See AVS4YOU at
http://www.avs4you.com/
It has everything you ever need. Cost is $59.00 for unlimited access to all the programs or a 1 year supscription for $39.00.
Most of the programs are Win 8 compatible (just look for the logo next to the Download button). The video editor is.
I bought this program (unlimitted) a couple of years ago and prefer it to Photoshop Elements 10 and Premier Elements 10.
I think you can buy each product individually but buy any two and you may as well buy the lot. They are all useful.
I am using on Windows 7.