There have been multiple accounts created with the sole purpose of posting advertisement posts or replies containing unsolicited advertising.
Accounts which solely post advertisements, or persistently post them may be terminated.
S5E11 "Three Hundred Big Boys" aired Jun 15, 2003 and references Dwight buying 5 shares of Amazon. The closing price for Amazon (AMZN) on June 13, 2003 was $1.70 - the latest price is $126.94.