Thanks, Mike, for your response.
I have sent two emails to the address you provided, the first one 10 days ago, and no response so far.
This is a very disappointing situation. I'd like to be able to include Bing Maps in my application as the ESRI imagery isn't always suitable for our needs. I am very surprised that obtaining pricing information would be so difficult... I have been trying for months!
Anyone else have any words of advice on how to proceed?
-Frank