Legitimate software discounters buy keys in bulk and sell them at 70-80% off. Sites like and BitsDuJour have offered PC HelpSoft Pro keys for as low as $9.95 in the past.

PC HelpSoft is a utility designed to clean up registry errors and junk files. According to Best Reviews, it offers a forever free version with limited features and a that includes a 30-day money-back guarantee.