What is the average ticket price then?
In September, when I last visited the US, my experience was that domestic legs were quite expensive, no matter whether bought separately or as part of an international ticket.
The connections I considered were IND - ROC (one way about as expensive as an international return ticket, still running at $600 to $850 depending on carrier and time of day if I tried to book a ticket now for travel two months from now), ROC - JFK (about $80 on Jetblue about what we pay on a legacy carrier in Europe with two month's advance booking) or ROC - EWR ($300 on Continental).
Admittedly, this is only a snapshot, but it doesn't sound like airlines are giving tickets away right now.