The player can find common and rare items. The items they can buy depend on the level they have achieved. The food and drinks can cost as little as 1 Rox to over 100 and changes every 15 minutes.
Sometimes there is holiday items, such as Twistmas Candy Canes and Switchy Day cake. The Gross-ery store is one of the three places in players can buy food. The other food shops are Rare and Scare and McDolphins.
- Two of the drinks sold at the Gross-ery Store, Essence of Blue and A Sauce of Course, can be unlocked as a sauce in the Ice Scream game.
- The food that gives the lowest amount of health, Ketchup Jelly Bean, is sold here.
- In June 2013, Katsuma Krunch went missing from the Gross-ery Store for a few days.
- During the Great Moshi Treasure Hunt, the store was renamed the Gross-arry Shoppe.
- For a short period of time, the furniture item, Moshling Theme Park Big Wheel was sold here as part of a glitch.