Source for Prehung solid doors

[John Hickey]

Appreciate any feedback. I have learned and heard from others that solid wood doors are the best bet for lower end rentals. I’ve been buying from lumber supply and occasionally from Home Depot. Prices for my prehung primed door is usually around 180. Does anyone have another supplier? I’m looking to buy 16 doors at a time, but I could go a bit more if the price were right. Btw I have found a supplier that does wood windows at a great price. Very handy when working in historic areas. Trimline. Most of my windows are around 375.