Does anyone out there make affordable doors for the mid-century modern aficionado?
Thankfully, yes. Custom doors by Shannon Walker.
Met Shannon through Ebay after stumbling upon a stunning door. She's very friendly and responsive. No doubt she's a craftsWOman. Beautiful product. Fair price. I will soon be working with her and will report back. In the meantime feel free to email her (firstname.lastname@example.org) with your doorway needs. She welcomes custom orders.
Her newest incarnation:
Another source is crestview doors, but they don't give those things away. I will be working with Shannon.