Nope, sorry. Steam only had it on sale for like 12 bucks or 11? Something like that. Amazon just had it on sale for 5 bucks recently! I got mine there for 5. It was quite nice. Unfortunately the sales have ended and you will have to pay 20 dollar on steam/amazon whatevs... You should do steam though. It is such a handy little thing. One little ap for multiple computer games!
And I think Odin is the most populated server...? Then maybe Lakshmi.
And yeah, no point in a physical copy really. If you do steam and uninstall game in the future, as long as you have your steam account/pass you can ALWAYS have it to download again and Steam keeps all your CD keys for games you buy from steam so no need to write them down/memorize/whatever you care do with them.