Corn Dogs normally go for about $1 each at Sonic (the price varies with location), which comes out to a roughly 50-cent discount per Corn Dog with the deal.
The promotion runs all day on 1/20/16 at participating Sonic locations, while supplies last. There's no limit on how many Corn Dogs you can buy.
The 50-cent Corn Dog deal is typically offered several times a year at Sonic, with this being its first appearance in 2016.
