To Sell or Not to Sell

With the case provided by Professor Johnson, you can see a scenario in which John Smith has a decision on his hands.  John Smith is on the verge of bankruptcy who owns a small research firm.  He surveyed more than 2,000 people about when they will buy a new car.  A car dealer then offers 8,000 dollars for the names of customers who are "likely" or "very likely" to purchase a new car within the next 12 months.  The question is weather he should or not sell these names.  I personally think he should.  I do not believe it breaks any codes of ethics.  He is about to lose everything he has to bankruptcy, including his company.  I believe the 8,000 dollars can keep his companies doors open a little longer, and be able to pull in some more profits.

What do you think?  Should John Smith not sell the names, or should he?  Would he be breaking any ethics?