I have found another solution to labeling which does not involve labels. I make a sheet with titles, prices, and thumbnails of each image. I happen to use Filemaker Pro (as Sparky mentioned) to keep track of all of my images, and info about them, so this is just another layout in FM, but you could do this with MS Word. I make a layout that fits a letter size sheet, each image is a "row" with the thumbnail, title, and price, with my contact info at the bottom. I leave 100 sheets at the opening, and replace as necessary. Because each image is there on the sheet, no labels are necessary(galleries seem to like this), and visitors can take a sheet home with the image and price. Of course you need a minimal scanner to create the thumbnail.
If my attachment doesn't work, and you would like to see this, PM me and I will email it to you.
See attached pdf. (I haven't attached an image before, hope this works)./Users/georgecollier/Desktop/ Negs & Images.pdf