Code added to my site to grab sports scores and win/loss and odds

Hey, I am purchasing a sports betting website that has everything built into it except you have to manually put each game into it everyday, I would like it to automatically grab all the games and odds and if they win/lose and update the site. But its missing something that I would like, and need it coded in. Its coded in Ajax and PHP. Basically thats a site for gambling on sports games, as you know there are 100+ sports games going on each day. I would like something coded in that automatically grabs each sports game and puts it in the system so I dont have to do it manually. The developer of the site said it should be very easy to code in and he would do it if he had the time. Wondering how much you would quote to add in a feature like this.