It works like this: regional hosts list the prizes being offered in that part of the world.
Some of them won't travel (i.e. AP04: Mugaritz down under: A tasting menu with matched wines for 2 people worth $460 at the Royal Mail Hotel, Dunkeld).
Some of them can be shipped around the world (i.e. EU02: A Big Box of Swiss Chocolate).
If you're interested in a prize, buy a ticket for that prize (or more, if you want to up your odds of winning it). Each tickets costs US$10, and the payment is done through a third-party dedicated charity site, FirstGiving, which has been involved since the first round of it. Each raffle ticket will *only* apply to the raffle for the prize you specify. (It helps to avoid winning food you're allergic to, or a dinner which requires an expensive international plane ticket which you weren't budgeting on.)
Part of my fondness for the event comes from luck: I've boughts tickets three years running, and won something all three years!
If you're interested, keep checking back to Chez Pim, the event's originator and overall host, over the course of the next 10 days as more prizes are added. After all, just because you don't want to win dinner for 8 in NYC, doesn't mean there won't be something else added later that won't appeal!