I just met with a painting contractor to provide a bid for painting our home's interior and asked about cabinets. He said that on-site painting would be double the cost of manufacturer applied paint. However, I've seen people do this and the positives are that there's no damage to the paint in shipping. If you have a garage space or somewhere your painter could set up the doors it would be ideal.

I'm getting manufacturer painted doors and the finish is very smooth. If I touch them up, I'll never get that finish again but I'm very budget crunched and it's a nice look so I'm just going to go with it and hope that they either don't get too dinged over time, or I grow to like that "lived in look" ; )

Where do you live? I had this done in Western Michigan and loved the result from my paint contractor.