This seems like a hell of a deal if you eat at Wendy's a lot . . . or even eat there, like, three times a year.
Right now, you can get a key tag at Wendy's that will give you free small Frostys with any purchase for ALL of 2019. And it only costs $2, with the money going to charity: The Dave Thomas Foundation for Adoption.
So yeah, free Frostys for a year for $2, which you could ARGUABLY write off as a charitable donation.