The number for example #5-052 is a 4 digit number that Shopkins use to classify their names. The first number is the season and the last 3 are the number Shopkin it is in the season. If it is exclusive it will have letters instead of numbers but I will put s then the season to specify which season it is. The letters behind these numbers are how rare they are. C = common, R = rare, UR = ultra rare, E = exclusive, and SE = special edition. The number will show first then the rarity and then the name i.e #5-083 C Sprinkle Lee Cake. No matter how many you buy the shipping is only $3.72