That's just a -1 with a stock rear. You will notice a difference, but alot of guys like the -1 +2 setup better and you will notice alot of difference but will sacrifice some topend. That's a fair price you might find a little better but depends on shipping.
we put them on every full bike we do, we have them here for gsxr's with the silver or gold chain.
this kit is more of a change than just going down 1 in the front, its also a 520 conversion, and extremely light vortex aluminum sprockets, I love the kit on my 01 750 made a nice compliment to my other mods