Like Hummingbird Factory, I also have state items that I customize for any city or state. For the paper items, the price and minimums are the same although my production times are higher since I don't have any backstock ready to ship. For screenprinted items, I also require a higher minimum at first, but I don't charge a set up fee because I can keep the screen and reuse it for other shops in the same city. The next time they order, my minimums are the same as my non custom items. I also try to customize colors for state items because shops sometimes like to match their sports team's colors. I think it definitely makes you stand out among other sellers if you are willing to "customize" something for a retailer. However, I don't do completely custom designs for anyone. It's very hard for me to price a custom design because the amount of time I spend designing can vary so much from one project to another, and as soon I accept a custom order, I get a large wholesale order and suddenly don't have time to invest in a custom order anymore. Never fails.
I've looked at your jewelry several times, Natalie, and I love it! Do you only customize your state items for wholesale buyers, or do you customize other items as well?