At participating Subway restaurant locations, buy a 30-oz. drink and get a 6" Sub Sandwich for free when you sign up for text offers here. That's a savings of around $4 and tied with our mention from February as one of the best deals we've seen for a 6" sub from Subway. (A 30-oz. drink costs around $2, depending on location.) Some exclusions may apply. Click here to find a location near you.

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