[Not sure if anyone's posted this method as I've been avoiding spoilers like the plague, buuuut, I found a neat trick that I thought I'd share :3 (it's. not ideal (requires s-rank and ~30 seconds per cycle))]

Step 1: Exchange D$1000 for 250 PTs (D$250 for 60 PTs works but isn't as effective) from the trusty vending machine found in the S-Rank Lounge
Step 2: Purchase 12 servings of that sweet sweet TV Slop
Step 3: Run over to the ABC-Rank rewards room where you can sell your slop at the reverse vending machine
Step 4: PROFIT!
Step 5???: Repeat ad infinitum

*Disclaimer: While this method can make you infinite $D/PTs, it will take quite some time
**Double Disclaimer: no time equates to ~30 seconds
*** TRIPPLE DISLCAIMER!!: pl ease don't sue us :(