Is this the Lyman 310 tool?
http://www.midwayusa.com/rewriteaproduct/891431
It would be more expensive than the Lee setup, but it looks handier.
I used a priming tool a while back, I think I would get one of those either way.
A bare minimum list of stuff I need would be good too, and a list of things I should get to make things easier like the primer tool and digital calipers.
And just for reference, here is the Lee setup.
http://www.midwayusa.com/rewriteaproduct/666984