G17 vs G18

So on Gryphon has different versions of the same stick for different years. Is there any difference? Right now, the Tour G17 is $295 while the G18 is $380. Does the difference justify the price?
Thanks!!

Tour pro G17
https://www.justhockey.com.au/gryphon-tour-pro-g17.html

Tour pro G18
https://www.justhockey.com.au/gryphon-tour-pro-g18.html