Here is the list of every shop restock time I was able to locate.

Shop Restock Time

0|5
Batteries
Cleaning Products
Computers
Contact Lenses
DVDs
Flowers
Frozen Foods
Male Clothing
Musical Instruments
Pots of Paint
Sunglasses
Tools
Vegetables

1|6
Appliances
Balloons
Chocolate
Costumes
Eggs
Female Shoes
Minipet Food
Minipets
Pearls
School Supplies
Seeds
Sushi
Weapons

2|7
Armour
Bakery
Candy
Charity
Giant Vegetables
Gourmet Meat
Halloween Treats
Illegal Concoctions
Male Shoes
Pizza
Soft Drinks
Wallpaper
Wigs

3|8
Books
Canned Food
Car Parts
Fast Food
Fruits
Furniture
Giant Flowers
Hair Dye
Ice Cream
Potions
Stars
Voodoo Dolls

4|9
CDs
Traps
Charms
Cooking Ingredients
Female Clothing
Flooring
Giant Fruits
Lipsticks
Magic
Medicine
Stamps
Toys
Trading Cards