This is my first post and it is directed toward those who already have a successful (50k+) web design/development company - I thank you in advance for all replies.

In short, I am an experienced developer but still learning good development business technique.

I usually offer qualified leads 1 or 2 PSD mockup designs in order to secure their business. I spend on avg. 100+ to prepare these designs. This is something I am happy to do in order to secure a good client project. My issue presents itself when the client receives the designs and then I never hear from them again . I am not interested nor do I have the resources to provide free designs for every lead that just thinks they are prepared to hire a developer to build their site.

My fear has been losing potential clients if I were to demand an upfront retainer. If I should be charging for these mockups -how much is reasonable.

Please share your experience and abuse prevention tips .