Amazon has Trident Gum {Watermelon Twist}, Package of 12 for $5.39 with FREE Super Saver Shipping and $35 purchase or FREE with Amazon Prime.
This is an add-on item, so you’ll need to spend $25 (which can include this item) in order to get the price.
It comes out to $.45 per package which over 50% off the retail price of gum. (And when did gum get so expensive??? Oh. My. Word.)
Pricing was current when the post was published, however Amazon prices change often, so please check before you buy.