I think they will ask you to show them your statistics: how many uniques you have per day, how many times you site is found from search engines daily.
If they like your statistics they will offer you a deal. Now I can’t say how much you should ask them, it depends on your statistics.
But you have good positions in search engines I think you shouldn’t worry, just upload links and banners of casinos, poker rooms and bingo sites, and earn your money.