The $4 lunch is gone. I have eaten out for lunch every work day for many years. I am surrounded by all the fast-food chains, restaurants and then some. Over the past year my lunch budget average has increased 36 percent from $5.50/day to $7.50/day. Yes, I track it on a spreadsheet.
Prior to this jump, I increased my budget from $5 to $5.50 in 2013. Lunch prices were stable from ~2007 to 2013, then again from 2013 to 2017. I blew my budget in 2017 so I had to adjust my spreadsheet.
I also adjusted where I ate and how often.
One thing I miss is the Miller's bacon, grilled onion cheeseburger. 2 years ago it was $7, now it's $10 something. Sorry Miller, I took you off my lunch rotation.
Luby's Luan went from &6.60 to $9 something. Don't do that as often either.
Schlotzsky's has gotten ridicules, over $8 now.
I do more Arbey's, Wendy's and Whataburger now to keep the budget in check.