I bought one for $4.99 (sadly, they forgot the bacon...).
My local Wendy's has been failing me as of late. This is the second time in three or four visits that they've screwed up my order. It's not like they leave out secondary ingredients either; it's been key components (like no pulled pork on my Pulled Pork Cheese Fries...). Anyway, I think I've eaten enough Wendy's bacon to comment on the lack but I'll get to that later on and start with the cheese.
Beyond the cheese, the spring mix and tomato were relatively fresh and plentiful. With the spring mix, you don't get much, if any, in the way of crispness.
The brioche bun was somewhat hearty and a little dry. It lags behind similar buns offered by competitors like Carl's Jr. and Jack in the Box.
Overall, Wendy's Bacon and Blue on Brioche was good but plays it safe with the blue cheese and comes on a middling bun. The bacon would have helped liven it up a tad, but it would still be somewhat boring.
Nutritional Info - Wendy's Bacon and Blue on Brioche
Calories - 650 (Calories from Fat - 350)
Fat - 39g (Saturated Fat - 16g)
Sodium - 1290mg
Carbs - 37g (Sugar - 6g)
Protein - 34g