“Never buy from a rich salesman and always hire a rich attorney”

The Complete Murphy’s Law (1990) by Arthur Bloch included these rules:
 
“GOLDENSTERN’S RULES:
1. Always hire a rich attorney.
2. Never buy from a rich salesperson.”
 
It’s not known who “Goldenstern” is and it’s not known if his “laws” had been in use earlier. One should always hire a rich attorney because it shows that the attorney knows the legal system and can keep one out of jail. However, one should never buy from a rich salesperson because that person is just overcharging and is taking too large a cut—a cheaper deal can be found.
 
     
Google Books
The Complete Murphy’s Law:
A Definitive Collection
By Arthur Bloch
Los Angeles, CA: Price Stern Sloan
1990
Pg. 223:
GOLDENSTERN’S RULES:
1. Always hire a rich attorney.
2. Never buy from a rich salesperson.
 
Google Books
Adventures of an Inventor, or, How to Survive and Succeed in Inventing Business
By Jacob Fraden
San Diego, CA: Hurricane Books
1996
Pg. 283:
I refused to believe that the American justice could be so unjust, and decided to follow the old wisdom: never buy from a rich salesman and never hire a poor lawyer.
 
Twitter
Insant Follow Back
‏@InstantAutomata
#Goldenstern’s Rules: (1) Always hire a rich attorney (2) Never buy from a rich salesman. #tfb
3:52 AM - 4 Jun 2011
 
Google Books
Aforismi e Misteri
By Ugo Sgherzi
Ugo Sgherzi
2014
Pg. 4:
«Always hire a rich attorney, BUT never buy from a rich salesman» (Anonymous)
 
Twitter
Because I’m Mom!
‏@BecauseImMom
Goldenstern’s Rules: 1. Always hire a rich attorney 2. Never buy from a rich salesman.
7:55 AM - 25 Oct 2014