How about a two-tier system where 99 bucks gets you a version with your wording, while $999 (or whatever) gets you a version of the logo with the wording and gets it removed from the site. Or is that already how it works and I skimmed too lightly?
"The first customer to purchase your logo has the option to buy all rights to your design. This will cost them an additional $199, bringing the total cost to $298. For some customers exclusivity is a must, so for them this option will be very compelling. "
