You allow me to put a screenshot of the design on this page; ($5 extra if you don't) You could reword that clause so your clients feel they're getting something valuable for their $5. Please note that I post all designs to my public portfolio and this website. If you need the design to stay secret, it only costs $5 more Or you could invert your pricing. So you start off as "designfor20bucks" and offer a $5 discount i…
I don't think the $5 makes a huge difference: and this way, the designer has more chance that people will allow him to post the design into his portfolio. I'm pretty sure he is not doing it for the money, but rather to get some experience and build up his portfolio.
I'd say thats fairly significant.