I purchased an extra-small for my mom's Chihuahua at the outlet about one month ago for $10. Unfortunately, the extra-small was too tiny for her Chihuahuas, so I put it on my largest cat (and it looks ADORABLE). I have seen small, medium, and large collars for $30 (I bought two mediums for my dogs over the summer at $30 each) and just yesterday found a pink medium for $15!! I also bought two extra-large collars for $7 each during the summer for my MIL's dogs. If you see small and extra-small collars at the outlet that you like, buy one in each size and take them home to try them on your dog--you can always take the one that does not fit back.