I tried Arby’s new sandwich today because of the coupon below. I think the drink cost $1.50 for a small (which is the size of a medium 20oz) or $1.70 for a medium (which is the size of a large drink 32oz).
The sandwich was good. I didn’t look at the normal price though so I don’t know if I’d buy it once it isn’t on sale.
If you want to try it the coupon link is below. It is good until 3/20.

Free Arby’s Sandwich with purchase of drink