We offer (3) sizes of our Ribs. Sm. Ribs - good for pups up to 15# .50 WHEN ORDERING SMALL RIBS - DOUBLE UP ON THE QUANTITY, TO GET THEM FOR THE .50 COST. IF YOU WANT 10 SM. RIBS, ORDER 5 SM. RIBS. 20 SM. RIBS - ORDER 10, THIS WILL EVEN OUT IN THE CART. GLICH IN SOFTWARE!!!! Lg. Ribs - good for pups up to: 20-40# $1.00 EXLG. Ribs = good for pups over 60# $2.00 Ribs are a good solid chew for your pup, just to give him something to occupy them for a short time.