Huntingtons.com has single .700 and .600 NE cases and bullets for a reasonable price. I got a .700 case and 2 bullets for $30 plus shipping.The .600 cases are $12 and .700 are $19.98. Bullets for both are$5. It took a bit of work, but I put the bullet in the case by hand, and improvised a crimp-nothing I'd trust in an actual hunting situation, but it makes it look a bit better for display on my reloading desk. I keep meaning to order the .600 as well but never seem to get around to it.

Link to cases and bullets

http://huntingtons.com/singlebc.html