CONFESSION ALERT - I went twice in one week! First time I had the good ol' Classic Coal Burger w/o cheese, sauce on the side and sweet potato fries. Amazing! I wasn't disappointed in the least bit. I did order the smaller version, which I appreciated was even an option. Not everyone needs a burger the size of your face. (my opinion ...)
Second time I visited ... AKA three days later. I tried the "Other Coal Burger" which is the vegetarian version with black beans, rice, and veggies. Pretty good but a little dry. I asked for a side horsey sauce. Made it 10x better!
As far as cost is concerned I think it is VERY reasonable considering the quality of the food and environment. I think it competes with In N Out Burger (across the street) but better tasting food!
First Visit - $8.00
Second Visit - $9.00
Quality and good tasting costs ... And is WORTH it!