Separate rates for print, web, social media?

I've been contacted by a magazine (USA Hockey) asking my rates for one time usage, and if my rates are different for print, web, and social media. I'm thinking $200-$300 per image in print, but I'm wondering what would be best/ideal for web and social media. Should I say "let's call it $400 per image, and you get one-time usage in the magazine, and unlimited web and social media for a year" ?

Your thoughts?

Also, he asked "Even if we can't use these photos, we may have other assignments during the season if you're interested. We appreciate you contacting us." ... so I'd rather not screw this one up

EDIT:
http://photographersin​dex.com/stockprice.htm <-- does this link hold much water still?