As a kind of shout-out to her older sister, perhaps tongue-in-cheek, Eva Gabor, playing Lisa, mentions that she impersonates Zsa Zsa Gabor. Despite long and starried acting careers for both actresses, they acted only once together, and that was in Orson Welles's Touch of Evil (1958) and then only in minor roles.
Adjusted for inflation, the $700 bill Mr. Haney gives Mr. Douglas would equal approximately $6,400 in the year 2023. The $900 itemized bill would equal about $8,200. The $50 Mr. Douglas agrees to pay would equal approximately $450.
Haney wants to charge Oliver $700 for building supplies. When Oliver asks for an itemized bill, the cost goes up to $900.