I got mine at Sleeve City. Scroll down they are called Super Jewel Box King DVD cases, ( Not the slim ones) the prices decrease with multiple units
http://www.sleevetown.com/dvd-case-single.shtml
You can order them unassembled so the DVD inserts are not in them. You put "ship unassembled on the comments section.
They are however, just like CD cases with the opening on the side of the lid where the paper insert would go . SU cases are completely closed and I like that for small items .
The Sleeve City ones are totally clear plastic and SU are not totally clear plastic , but you can see through them
With shipping the cost is about the same for either ones.