I'd go for it. Avon is a good tire, I've always run their road riders on my Ninja 500. Heck I'm running cheap Shinkos on my 919 right now that cost more than those Avons, which I'm sure are just as good if not better than a similar offering from Michelin, Dunlop, etc.
Just a note; these Shinkos on my bike may be my favorite tire I've ever run! But I'd still take a set of name brands over them for that price just for newer tech and it being a "better" tire even if those advantages aren't really apparent to my riding.