I would offer my couch but my parents may not like that. If it's being held at either the world trade center or the new convention center you COULD stay at the seaport hotel but thats something like 150/night
you could stay on the far outskirts of the city (near the burbs) for closer to 70-80/night and take public transit in ($10/day tops)
Well, I was planning to only spend 20 bucks + food. Hmmm.... Maybe I'll camp outside. I'll need a tent though. Which is another problem. Hmm.. I should get a tent anyway.