I get a lot of inquiries from printing companies about custom match striker sizes for custom matchboxes.
Here are some guidelines:
1. I import the match striker sheets twice a year from a matchstick company in China. I generally have about 800 sheets in each color for most of the year, with higher numbers when inventory first arrives. If you need 5,000 striker shapes that are around 1/2" x 2" (just as an example), they fit about 80 per sheet, so that's about 63 sheets of inventory. I can manage a job like that in about 3 weeks.
2. If you need more than 5,000 striker shapes or more than 50 sheets, you would have to wait until I receive new inventory, or contact a matchstick company yourself. I'm glad to refer you to my contacts.
3. I divide sheets into 3 categories based on how they look. These are not grades like sandpaper. About 25% of the sheets are near perfect (Premium). Another 25% look very good, with minor imperfections that can be ignored or cut around (Regular). The remaining sheets look average (Bargain Bin / Basic) or gnarly, which I don't even sell. When I cut the match striker shapes, I use a combination of the Premium and Regular sheets. If you don't care about how your strikers look, I would cut them from the Bargain Bin sheets.