Originally Posted by
iahphx
Does anyone have any codes to add? I can't believe I'm the only one who finds it useful to have this info in one place.

This has been very helpful to me!! I was using the National code 5026639 which is for TDB Publications.
I tried the other National one you had posted and the Big 10 one beat mine by $50.00!!!
What is your experience with id checks for the Big 10 code?