I gotta check with the wife. $500 sounds like pretty cheap for advertising on what every beer geek will watch.Sure, we'll watch it. I don't know how big he was in France though, and unless you're planning to ship beer here . . . might be better to spend the $500 on kegs.
Word of mouth, my friend, word of mouth. You know how many American and British tourists pass through Paris every week?
I'm sure the beer geeks will seek out breweries in Paris, and since you'll be about the only one there they'll come to you anyway whether you advertise or not. I'm not a marketing expert, just thinking for a new brewery $500 might be better spent on equipment than advertising, especially when the ad might not go up for months. But if you've got the budget for it, go for it.