Shop is divides in a tier system. Within each tier there are items that all indivually cost a certain amoun of coins.
Costs per tier
Tier 1 = free
Tier 2 = 100 coins
Tier 3 = 500 coins
Tier 4 = 2500 coins
Tier 5 = 10000 coins
Items per tier
Tier 1 = Samurai + Katana || Lumberjack + Ax
Tier 2 = Army outfit + Swordfish || Cook costume + Frying pan
Tier 3 = Dog onesie + Lamppost || Gladiator outfit + Morningstar
Tier 4 = Medieval armor + Medieval longsword || Dragonball style jumpsuits + Fishing rod
Tier 5 = Darth vader + Lasersword || Astronaut suit + Satellite