Firstly I heard you can buy gamecards with Isk and i was wondering how much a gamecard was worth in ISK.

As for the trade part im wondering what the highest FG:ISK ratio i can get is in here.

300mil isk per gtc

anywhere from 3-3.5fg:isk ratio

I'm doing 3:1 right now.

it's more like 250mil for 30 day PLEX in-game...

250mil isn't hard for an established player to make... not sure what capacity you have to make isk though.

as for eve i never got very established, but i am decent at games in general once i get pointed in the proper direction. BTW do established players typically play the market,mine, or missions to make that much per month?

Well making that much per month is trivial for an established player. Any of the above can easily bring in well above 250m per month.

You'll need to probably be heavily trading, doing level 4 or 5 missions or living in 0.0 accessing those resources to easily get that a month PLUS enough to support whatever other activities you want (pvp, etc..). I know that with tne new sov mechanics and upgraded systems in 0.0 ratting is pretty darn profitable now, and with upcoming changes to mineral sources in the next expansion mining should become acceptable again as a high-profit profession.

you can make about 8-20m per level 4 mission (takes about a month or 2 to have access to them) and you have to be well fit to tank them

they take about 30-1:30 you can do them faster if you can do them with a friend but they're half as profitable then

the longer you've been playing the more you'll make - i can make about 6-8m per 30 mins running good missions if im lucky

High end income for ratting/missioning is around 40-70mil/hour. Mining kinda sucks right now but hopefully that will improve with next expansion.

plex's are at 300mil atm, they have gone up in price recently. as for making 300mil a month extra to pay for a subscription i can say that before i went down to 1 account i had 3 accounts, 2 of them hulk pilots and i half-afk mined with them when i was on my main toon, and i made enough isk to pay for all 3 accounts and then some for covering pvp costs