I am looking into buying a duplex in Hyatt Park and wanted to get some advice on what contractors/suppliers I could contact that have investor friendly pricing for kitchen cabinets, countertops, and bathroom vanities.

They want someone who is going to treat their employees and their customers well.

Obviously they are customized to what works for us but some our templates maybe helpful for you to modify for you. 

They can't assess all the subjective data like overall layout, view from the living room window, the dogs next door that bark all day, the width of doorways, size of individual rooms, quality of kitchen cabinets and appliances, etc.The best thing to do is study your market regularly.

The better theming will attract a higher quality customer that understands the value.

I paid for the subscription for a few months and drew my own custom Google maps areas and color coded them red/yellow/green based on a "grade" I felt came from a few metrics like crime/average household income/etcI also really like realtors dot com new maps, if you search for an address and click on the map and then go to the top left and choose the Value slider it will give you a nice color coded map of which areas of a neighborhood are higher valued.

Vendors who partner with Costco pay for market exposure and referrals, which often adds to the final cost passed on to the customer.

Willing to customize to tenant desires FOR A PRICE. obviously, some of the above is accomplished by the particular property you purchased; some by repairs, maintenance and improvements, and some by ongoing service commitment.   

The Automations are very good and you can customize mass follow-ups 2.

Estimated cost for remaining changes (all new electric, drywall, tile, fixtures, cabinets, roof, doors, windows, heat pump, some siding, and fencing.