Dang for that money I'd have snatched that mill up in a New York second.
It's crazy how important not only the angles are, but the worth of the angles.
And it depends on the bowl too. On 45 degree stuff for MoPar OE junk I like a 4 angle cut with the bottom cut a full .100 wide. I can't remember the angles at the moment, but IIRC the rest of the angles are all at least .060 wide if not .080.
On the 50 degree stuff the bottom cut isn't as wide...maybe .080ish IIRC.
It all makes a big difference not only in flow through the port, but how well the port flows backwards and even how well they flow at different test pressures.