Actually the prices sound surprisingly reasonable - compared to some U.S. motorcycle tours I've seen - although of course you still need to get there and I'm not sure what gas prices are running in Europe. Single supplement is not way way outrageous. Nice selection of bikes as well. What are you thinking - about $6,000 all in?
My travel budget this year is practically non-existent - but that doesn't mean I won't go anywhere, just that most likely I'll have my camping gear on the back of the bike. One trip will be to the Cabot Trail and one trip will be back to the U.S. southwest - mainly concentrating on New Mexico and souther Colorado - which got just kind of a drive-through last summer. Both of those will probably be week-and-a-day trips.
One of my friends who is fairly new to riding wants to go on a trip somewhere this summer and I've agreed to kind of "mentor" her - which will mean toning down my touring style substantially, but that's okay. I'm leaving it up to her where she wants to go, but I'm not expecting 12 hour days are on the agenda

Also she won't camp, but that's also okay since we'll be splitting accommodation costs.
I just had new chain and sprocket put on my bike before going to Arizona last June, and new tires put on when I got back, so hopefully this year will maintenance free other than routine spring tune up and oil changes, but at 117,000 k's and 10 years old I can't really discount that major repairs might be needed - fortunately I have friends in Lake George, NY, Morgantown, WV and Hagerstown, PA who will let me camp in their backyards, if needs be
