I just stopped eating fast food altogether and started using our company cafe, prices at the drive-thru got absolutely ridiculous and the service got worse. I just eat a small salad and a drink, still costs around $6–7/day, but it's way better than fast food prices. I could probably get it down cheaper if I prepped at home, but fruit and vegetables go bad so frequently and our cafe's rates are ok-ish, so I just make due with that.