I had to find some good candies for a special event, so I did some research. Here are the best prices per ounce currently available on Amazon. ranging from .22/ounce and nothing over .35/ounce.
Here's the list ranging from lowest to highest. I understand several may not be at thier lowest prices in history, but if you are in need for such for a special event/occasion, it's a good current list to check that may fit your needs for now on main brands and candy.
ROLO Gluten Free Chewy Caramels in Milk Chocolate, Individually Wrapped Candy, 40 Ounce Bag $8.98 (.22/ounce) "Add-On Item" DEAD
HERSHEY'S Chocolate Candy Bar Assortment, Miniatures (Hershey's, Krackel, Mr Goodbar, Special Dark), 40 Ounce Bulk Candy $8.98 (.23/ounce)
REESE'S Peanut Butter Cups, Chocolate Candy, Miniatures, 40 Ounce Bulk Candy $9.44 (.24/ounce)
HERSHEY'S Kisses Chocolate Candy, 40 Ounce Bulk Candy $9.44 (.24/once) - Now $9.99
KIT KAT Assorted Chocolate Candy Bars (White, Milk, Dark), Snack Size, 36 Ounce $8.98 ).25/ounce)
REESE'S Peanut Butter Cups, Assorted Chocolate Candy (White, Dark, Milk) 36 Ounce Bulk Candy $8.98 (.25/ounce) "Add-On Item"
SNICKERS Minis Size Chocolate Candy Bars 40-Ounce Bag $9.94 (.25/ounce) "Add-On Item"
SNICKERS Variety Mix Fun Size Chocolate Candy Bars 35.09-Ounce Bag $9.14 (.26/ounce) "Add-On Item"
Mars Chocolate Favorites Fun Size Candy Bars Variety Mix 33.9-Ounce 60-Piece Bag $9.28 (.27/ounce) "Prime Pantry" - OOS
MARS Chocolate Minis Size Easter Candy Bars Variety Mix 67.2-Ounce 240-Piece Bag $17.99 (.27/ounce) DEAD
TWIX Caramel Singles Size Chocolate Cookie Bar Candy 1.79-Ounce Bar 36-Count Box $20.99 (.33/ounce)
MARS Chocolate Singles Size Candy Bars Variety Pack 33.31-Ounce 18-Count Box $11.33 (.34/ounce)
SNICKERS Singles Size Chocolate Candy Bars 1.86-Ounce Bar 48-Count Box $31.19 (.35/oune)
MARS Chocolate Full Size Candy Bars Variety Pack 53.68-Ounce 30-Count Box $18.89 (.35/ounce) DEAD
I tried to include details here, but please check all specifics in listings. Some are "Add-On" but can be prdered via Alexa to by-pass minimum. Some are Prime eligable, but some are not. Again, please check listing for all exact details.
Hope this can help those shopping in the candy section.