I was curious how Plex was advertised in recent years. Here some examples from 2011 until today (couldn’t find anything before 2011):
November, 2011 / August, 2012 (from the end of a newsletter giving information about upcoming releases and similar stuff)
FLEX YOUR PLEX
A Pilot License Extension (PLEX) is an in-game item that adds 30 days of game time to your EVE Online account. It can be converted from any game time code and can be traded on the in-game market for ISK. EVE players use PLEX to pay for their subscriptions, character transfers and even their EVE Fanfest passes. Players with inactive accounts reactivate using PLEX as payment.
August, 2013 (from a newsletter):
Whether you’re celebrating Simplify Your Life Week or preparing the kids for school (literally or figuratively), this weekend’s PLEX sale is here to help with those tasks that rest on this side of the EVE Gate. Pick up 1, 3, 8, or even 30 PLEX at a reduced price until 4 August 2013.
May, 2014 (from a “reactivate now”-mail):
Get the 29.99 PLEX 2-Pack! Reactivate with one and spend, save, or sell the other.
November, 2015 (Black Friday “Newsletter”):
Buying multiple PLEX has always saved you money, and now you can save a whole lot more. Buy the ship of your dreams, gift some to corp mates, or fund a war.
February, 2016 (newsletter regarding skill injectors):
Skill Trading can open up a world of options, and PLEX is a great way to explore them, especially with new ships, new skills, and citadels on the horizon. Pick up a pack of 2 or more PLEX and save on the bundle with this week’s PLEX promo.
March, 2017 (Plex sale advertisment mail):
Selected PLEX packages are now 15% off for a limited time. Why not take advantage of our amazing offer and trade PLEX for in-game ISK or use it to get Omega time?
In addition, PLEX can be used to pay for skill training on multiple characters and transferring characters between accounts, as well as reshaping your character’s appearance
June, 2017 (Plex sale advertisment mail):
Grab PLEX at a low price and trade for ISK to spend on your ships and interests. You can also treat yourself or a friend to an Omega upgrade and the many great items at the New Eden Store.
Act fast to get 15% off all PLEX packages until 7 June 11:00 UTC!
Trade your PLEX for millions in ISK and get access to:
* Get access to more ships
* Skill Injectors for swift progression
* Advanced modules to boost your battle odds