I don't live as healthy of a lifestyle as I should but 100-200 cans is less than 4 cans a week. if you went with 200. On an average week I probably drink 6-8 beers a week (I sometimes probably do that in 1 day at a tailgate) and I mostly drink craft beers on top of that so that's definitely more calories and alcohol content than Busch Light.
It's not uncommon for guys that drink domestics to toss back a 6 pack or more a day and not even get a buzz off it. I've heard of guys who would go through a 12 or 18 pack like nothing some times in 1 setting.
Yeah I think 200-400 might be the limit of a year's supply without admitting it's pretty horrible for almost anybody's health. The 700-800 the guy picked is probably about the limit of year supply without it going into the 'drinking problem' or 'health problem' territory.
Imagine if a year's supply of McDonalds was 2 meals a day, pretty easy to see how that "prize" would come with a not-so-hidden cost. Like others said, giving a guy in his early 20s this prize probably just means he and his friends will have some cheap Busch Light parties.
*Note that I'm only postulating any of this out of fun curiosity, not telling anybody how to live or remotely upset about anything. Seems this whole ordeal has people pretty sensitive. Also some people surprisingly sensitive if others don't love the taste of Busch Light.