Good deal for the g403. MSY is next cheapest at $69, and customer service at JB is great if you have any issues with the mouse, especially compared to MSY. Latest 3366 sensor and an well rounded ergo design fitting many hand shapes/grip styles. Full review here by Aussie gaming mouse reviwer, Rocket Jump Ninja here:(https://www.youtube.com/watch?v=ogzOpkM_ouo). This was previously available $49 when it first came out on promo at JB which is when I got it. Great experience with it and good price for what you get.
Also I don't mean to shill for this rocket jump ninja guy but he has very in depth reviews and analysis of mice, especially compared to some of others online. His website has a top40 and the logitech g403 is currently number 1 for a general safe choice: (http://www.rocketjumpninja.com/top-40/).
op. you might want to mention the shop to get it from in the title.