Ray,
Have used RegVac and A1 Cleaner for a few years now (in UK) and recommended same to various family and friends most of whom now have your products.  Most also read the top Computeractive magazine which is highly regarded here.  It prides itself on plain language and evaluates just about anything for computers.  I can't say I have ever seen mention of your programmes in this publication.  Might be useful if you could get them to print something.  I am sure RegVac etc will sell well enough here as it is well priced and supported.
Goods wishes.

   Thank you, I will look into that.