It is sad to see that some people have given a 1 star which seems more based on emotion than on what this module actually offers hosting providers/WHMCS managers. I have had several support questions and are very quickly resolved after a short wait of about 24 hours which is acceptable for a non-urgent issue. I even requested an exchange of a product due to one not being what we required and they happily obliged so again I'd suggest that the 1 star reviews are certainly not justified here!
The kind of extended functionality that CP extended does is worth every penny (at its price point, please don't increase it!). With the offer of a 7 day trial as well, i would advise anyone who runs multiple cp servers with WHMCS to give it a try!
WP Manager is excellent, we encourage our users to interact from our site instead of logging directly into cpanel and this really fits the bill. We have several products from Modules Garden and all are great - most also compliment each other in some ways too. Although WP is becoming more embedded with cpanel/whm and is available through the standard typical script installers - nothing offers a standard this high.