Trim color different than walls.Vertical blinds on large windows vs vinyl horizontal.Permanent LED lighting.Laminate floors where possible vs vinyl sheetgoods.New doors and hardware if standard size and therefore easy to change.Lock on front door with keypad and/or bluetooth.Paint garage floor.

Replace any metal p-traps with PVC p-traps ($4).

Wet areas - Peel and stick groutable vinyl tile. 

ESTIMATE via Real estate agent:Living room: Vinyl Plank/ wood look for flooring $2900.00.

I always install 1.5" PVC with 1.5" P-trap with a screw disconnect & hopefully the wall connection is also a time saving 1.5".

Some random things to know about me is that I love to strength train (I have and plan to again compete in Strongman competitions), I hold a PDC (Permaculture Design Certificate...which basically means I love working with nature), I'm currently learning to be a DJ (like, learning how to scratch on actual vinyl type of DJ), and I am a former Army brat (so I'm not technically FROM anywhere, but hey "It's not where you're from, it's where you're at").  

We got to a point where we decided that we had enough of the stench, the brown drainage on the walls, the burn marks on the window sills and sink tops and vinyl floors and the butts everywhere. 

Typical Indy example (class B property, late 90's, 00's vinyl village):PP:    $120,000Rent:    $1,200Taxes (assuming same assessed value):   $200/monthLoan:  $96k (80% LTV) @ 4%, 30 years....

Plus the inspector discovered they had used < Sched 40 plumbing PVC for the u/ground conduit.

You brought up about bad inventory and specifics about PVC or other plastics, the colorants and their lack of value due to specific product manufacturing.