This recipe was delicious! And as far as prices goes, this one is actually relatively cheap - it calls for 6 cups of cheese, (but only 3 different kinds). I substituted emmenthaler (instead of gruyere and saved a few bucks). I made half the recipe and it was plenty for 6 full ramekins. The blue cheese added a great kick and I liked the addition of the red pepper flakes. I also used half the amount of breadcrumbs (from a carton) and substituted crushed potato chips - yum! 2 enthusiastic thumbs up!
I think this has to be one of the most expensive Mac n Cheese, but boy is it good. Worth every penny. I don't care for blue cheese though, so I subbed feta. I also only made half of the recipe. Delicious! :)