I follow Trim-It on facebook and they just posted something saying they're coming out with a version this fall that does all three for $185. I don't see it on their website though.
I spoke with Dustin the other day about this very issue. He said that he would have to pay a die/tool maker to grind this profile on each cutter, and that each 3 way cutter would have to be case specific. Cost would be around $100 just for each cutter that would then fit inside his housing. So you would be looking at $185 or so for the first unit, and then another 100 bucks for each separate cutter for different cases as well as a collet. He said he does not see a market at that price point. He also said that the Giraud trimmer uses this type cutter requiring a separate one for each case as well. I'm no machinist, so this is what he said to the best of my memory.