As someone who goes in almost every day (I live close to my office and I enjoy getting out of the apartment). I wouldn't give up $600/mo for this, because management will never use that money for team events and travel. My team is spread out all across the country and we were told quarterly travel is no issue to all meetup in one of the cities that have an office. That went right out the door as soon as the economy went down. However, I can promise you that you wouldn't see that $600/mo back when you didn't get to travel.

I think this will be the new version of "free lunch" that tech companies offer. Come work for X, we pay for quarterly travel to meetup with your remote coworkers!