I have been watching stubhub. For games like last night season ticketholders were selling ticket for below what somebody can get as face value for an individual game ticket.
For last nights game I wouldnt pay more than 25 for balcony seats and more than 40 for lower bowl tickets. ( I don't mind sitting behind the baskets though)
Thanks for the feedback, it is really helpful. I am looking at a weekend game, Indiana Pacers and the cheapest two balcony seats are going for is around $50 each. I was reluctant to pay this because I had seen a lot of advertising that there were $10-20 balcony seats and it seemed expensive for non-marquee team...I will check out the nba.com site as well.
There are only a handful of $10 tickets, and generally those are not resold for anything close to $10, since their face value is so much cheaper than any other seats in the building.
You have to keep in mind that the vast majority of balcony seats' face value (for season ticket holders) is between $30-50 for the ends and corners, and between 50-100 from baseline to baseline, and it is generally even more than that, if you are buying single game tickets.
So, while you may find some good deals, finding tickets to a weekend game at less than $20 per ticket might be tough to come by.