One of EVE Online's PLEX pass is equivalent to a 1 month subscription to EVE Online
. Where can you purchase EVE Online PLEX? You can purchase PLEX off of EVE Online's website - www.eveonline.com which then creates an item in-game that can be sold on the open market. Presently, PLEX sells for around 350 million ISK in the major trading system Jita. They can then play EVE for free or sell it in game for ISK to help fund their adventures in space.
PLEX is created by purchasing an PLEX time card, logging into EVE, and converting the timecard into PLEX. A 60-day EVE Online timecard costs $34.99 and can be converted into two PLEX passes. Some sites offer ways to get EVE Online timecards for free. The site I prefer is http://www.eveonlineplexcard.com . On this site, you can fill out surveys and earn points towards a free PLEX pass on EVE. When you've earned enough points, you can cashout and get a thirty-day EVE PLEX card in-game for free. The way the site does it is that they will meet you in the major trading hub of Jita and open a private contract with you with a EVE Online PLEX card. They are quick - usually a 24 hour turnaround time. Sometimes you can get your free EVE Online timecard in as little as an hour!
As said before, you can play EVE without spending a dime this way or you can sell the PLEX for ISK, Eve's currnecy to create your dream ships or hoard billions of ISK. Sick of mining? Missions too slow? Fill out surveys and sell that PLEX for ISK and skip the tedium! Can't or don't want to pay to play? Fill out surveys and you won't have to! Those who are dedicated could even do both! Not only that, but the site has a referral program. Sign up your friends and you will earn EVE Online PLEX points every time they fill out a survey!