Based on the Mariano's weekly ad, the burger build comes in at about $5 each:
Our signature Pub Burgers are on sale for $4.99/pound - each burger is about $2.50
Private Selection Buns are on sale for $1.99 for 8 buns - .25 cents
Old Fashioned Thick Cut Bacon from our Meat Dept is $5.99, two pieces are $1.25
Add in about $1 for condiments and fried onions etc, lettuce tomato ...
Condiments like ketchup, mayo etc. are on sale 4/$5 and heirloom tomatoes are $1.99 pound