I've tried to find whether this is national or not but haven't had any luck. Input your address into the homepage and look for the purple banner.
Update
Is applicable to Sydney/Melbourne/Brisbane at least.
Deliveroo currently have a deal going with a limited number of stores offering special $10 meal deals with free delivery. Currently available to send to Bowen Hills is The Yiros Shop, Guzman Y Gomez, District 1 Vietnamese, Ribs & Rumps and Taste of Pakistan but YMMV. $10 to have a Halal snack pack brought to my desk is a bargain in my eyes (I can't imagine who's making any money off this).
You have linked to just the Deliveroo home page. Where abouts did you learn about this deal? Is there any proof it exists?
/edit/ googling 'deliveroo $10 lunches' and this 17 minute old post is the 4th result. How the hell does that work?