Before starting out asking for $20,00 a pop I would prolly go around and look at what really sells, then with that idea, put your own desing at work and not worry about what people think, if it makes you money, or the client then it is the best gallery, The best way to test your idea's is get about 10 of your own templates you built, submit them to 100 or so tgp's and see which ones convert which ones don't then you will know and then you can feel better at selling, That is why I myself give a money back if my galleries dont convert for my client or at least make their money back. *shrugs* good luck, its not a bad gallery but its still a untested gallery so dont know if it will be good or not.
TOM
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