This scope of work is at a good point to terminate, as the rough electrical work has been paid in full and successfully passed inspection, so the trim electrical portion of the contract is the portion I intend to take back to market and find another supplier for those services.The 4 instances of engagement with this company include: Electrical Scope of Work at XXX E 16th St - satisfactory work and resolved/paid in fullElectrical Scope of Work (in process) at XXX 7th St - Rough Electrical inspection passed/paid in full.

I'm looking for container suppliers. 

Here in NY our big supplier is Erie Materials. https://www.amazon.com/10-Metal-ROOFING-SCREWS-Corrugated/dp/B07B5PRD62

On the other hand, if there's something ELSE the landlord's talking about, well, that's a whole different story.It would cost about $3K to replace all the cabinet doors and drawer fronts of that kitchen from an online custom cabinet door supplier.

then you have your specialty shops and suppliers

You can also purchase probate leads from several suppliers.

Ask them for labor only costs and then costs with the paint, then compare their paint costs with HD/Lowes or your preferred paint supplier. 

problem with "cost-plus" you erase competitive capitalism  but if its too late to redo things, then demand 3 bids on everything and be available  to be part of the conversion on suppliers.

I am making a list of Material Wholesale Suppliers in Georgia/Metro Atlanta area.

Suppliers?