rocknbil - 4:30 pm on Jan 31, 2012 (gmt 0)
What did you ask for in the RFP? The deliverables should be explicit. Even so, @ 300 DPI the largest version should be fine at 3.75 inches.
I'd agree it should be standard, and generally is vectored, but the issue is most people don't have programs to read vectored art programs like Illustrator or Freehand. So general delivery is usually in a format most clients can view.
It all depends on the RFP and agreement.