ditto Sixgun_sage & Squinky.
I received two emails stating:
QUOTE (email from Catalyst@imrpro.com)
"We've recently mailed you a voucher you can use to peruse our PDFs and choose one that's right for you."
...but no actual voucher. Also - the email was caught in the spam filter (but no voucher in the spam filter).
I do look forward to eventually using said voucher if it arrives, so I appreciate the good idea!