Marioni's are a nice bike, but I personally wouldn't pay that much for a bike with only 105. I haven't kept up with them, but at one point they were quality "hand made" bikes from Canada. Whether that is the case still, I don't know.

My advice is visit a few other LBS in your area and price out some similarly grouped bikes and see if you can ride all of them. Then you'll have a basis for if it's worth your money to you. That's all that really matters anyway!