There are two places right near PJ's BBQ on RT. 9 that are pretty cheap.
Top Hill Motel
Design Motel
If you're willing to go an exit or two down, there are even more.
I was able to call and get a room at the Community Court Motel at Congress Park for $129+tax next Tuesday night. Thought that was a pretty good deal. Their listed price online was at last $50 more.
Here is a link to a list of places to stay. Might want to call and see what type of rate you can score by phone.
http://www.saratoga.org/visitors/whe...unty/index.asp