The income stream from new customers in this business is not so high anymore (I think maybe $700 or a bit less a month), and I firmly believe that even though i

The income stream from new customers in this business is not so high anymore (I think maybe $700 or a bit less a month), and I firmly believe that even though it's okay to play dirty when breaking into something new, afterwards go back and clean up your act. I have a long list of customers now, and I don't want them rerequesting the pricelist and seeing that same mistake. It's obvious then - and when your client list is long enough it is more profitable to target old clients instead of new ones. Upgrades, customisations, etc.