First, let's check out a theoretical "perfect run" through the 2011 foreign "offline" tournament scene. This was originally calculated for Stephano, as someone asked if he could even make $300,000 in a year of Starcraft; hence the slight European bent.

$5,000 x 5 - MLG Circuit = $25,000

$50,000 - MLG Championships = $75,000

$2,500 - IPL 1 = $77,500

$15,000 - IPL 2 = $92,500

$30,000 - IPL 3 = $122,500

$50,000 - NASL 1 = $172,500

$50,000** * ** - NASL 2 = $222,500

$26,000 - ESWC - $248,500

$1,500 - Dreamhack Cointoss - $250,000

$15,000 - Dreamhack Stockholm - $265,000

$16,000 - Dreamhack Summer - $281,000

$15,000 - Dreamhack Valencia - $296,000

$29,600 - Dreamhack Winter - $325,600

$4,100 - Assembly Winter - $329,700

$11,500 - Assembly Summer - $341,200

$7,500 - IEM European Championship (S5) - $348,700

$13,000 - IEM World Championship (S5) - $361,700

$6,500 - IEM Cologne (S6) - $368,200

$6,500 - IEM Guangzhou (S6) - $374,700

$6,500 - IEM New York (S6) - $381,200

$50,000 - Blizzcon - $431,200

almost forgot these guys

$2,000 - MLG European Invitational - $433,200

$3,000 - MLG Global Invitational - $436,200

$10,000 - European Battle.net Invitational - $446,200

** * ** - NASL2 prize breakdown assumed to be identical to S1, due to identical total prizepool as announced thus far.

This is all assuming only 1st place finishes and excluded some tournaments he would not have participated in (i.e., the non-European championships for IEM). It is also assuming he is able to be in two places at once (i.e., Blizzcon/ESWC, MLG Orlando/IEM NY).

The total foreign LAN prizepool for 2011 is over $1,070,000, just for the listed events (this total does include "multiple regions; i.e., qualifiers in NA, EU, CN, LA, etc.). If you throw in stuff like online tournaments like Total Biscuit's invitational, the Team Liquid Starleague, "Youtube tournaments" like Sunday Night Fights, the GeForce Pro-Am, and the numerous European Cups, the available prize pool almost certainly approaches $1.25 million for foreigners.

Most of these numbers come from the Team Liquid Liquipedia, so any rounding errors from Euros to Dollars are theirs, while any addition errors are my own.

Edit: Further research here suggests that the top 50 earning players in 2011 have made something like $2,175,000 (out of about $3,000,000 awarded total). Of these top 50, the Koreans took home $1,500,000--obviously a significant portion of it from the foreign prizepool. So it must be remembered that, at least thus far, although the foreign scene is paying a comparable amount of money to the Korean scene, some of "our" money is going to "them," and little of "theirs" goes to "us." Sorry for the scare-quotes, but it feels weirdly racist to call Koreans "them" without a bit of irony :P.