Before I know how much they usually cost, I spent $26 on 5 pairs of different sizes at Jos A Bank. At least they helped me determine the best size for my shirts. These options work just as well as the more expensive ones and even come with a better storage box.
220 Plastic π Collar Stays for Organized Closet
9 Review
π Premium Plastic Collar Stays - Assorted Sizes in Crisp White Finish
9 Review
π Durable Plastic Collar Stays in a Range of Sizes: A Must-Have Wardrobe Accessory
8 Review
π Ultimate Flexibility with Premium Extender Expandable Elastic America Men's Accessories
9 Review