Sonic Drive-In is offering Jr. Deluxe Cheeseburgers for only .89 cents all day today, March 9!
There is a limit of 5 and you have to mention the deal when ordering.
You can see more details on their website.
As always, this offer is for participating locations. You may want to call your Sonic to see if they are honoring this promotion before you head over there. The offer is only valid on 3/9/16. Tax and add-ons cost extra.
Thanks to GJan1 for posting about the offer on the blog!