There was the "Circuit Leasing" thing several years ago.
The WTS leased its new Buicks for CO / DO use. After the 3 year lease, the vehicles were returned to the JW-owned dealership, and that dealership set up a website advertising the cars for sale.
If you were considered a "trustworthy" JW, a CO would give you a business card or keychain for "Circuit Leasing" and ask if you were in the market for a well-maintained 3 year old car. It was ll very hush-hush, only for "trustworthy" JWs who wouldn't be shocked by such blatant commercialism.
Apparently the WTS is feeling confident enough that they can post commercial advertising on the congregation bulletin board and announce it from the stage.
Next step? "Welcome to the November edition of JW Broadcasting, brought to you by Bacardi, choice of Bethelite lushes in all 3 US locations."