I finally found Trident Mega at Dollar General. I was not looking for it but noticed New Item tags in the checkout line. They had two flavors, each pack has 10 sticks of gum. The gum is $1.50 with the $1.99 back when you buy 2 from ibotta 2 packs was $1.01.
This is the first store in my area to sell Trident Mega. If you are still looking for it try Dollar General. If you find it somewhere else feel free to add to this post