For a directly bolt on I'd say they are, especially if you've never cleaned or rebuilt carbs. Just to give you an idea I got a smokin deal (for my area) on crusted up 750F carbs for 100, got 100$ worth of Honda gaskets and accelerator pump parts, 80$ for ultrasonic cleaner, and that was 2 weeks ago...they still arent back together because I need to find new jets.
If you want to build them its a different story but if they're as good as they look and are described its worth it IMO