I too have been wanting a pair forever, 172's. But they're super hard to come by. I could never afford them back in the day, and now that I can there's none around. I'd pay big money for a pair too (no joke)
The whole reason I started the whole Stumpystick venture, was because I wanted some Motherships, but couldn't afford them at the time. Now I can afford them, and they're impossible to find, LAME!