The new Sight Stone will require a Ruby Crystal(475gold) + Sight Stone Recipe(475 gold) for a total of 950 gold, it will also give 180 hp. The original Sight Stone only cost 700 gold and gave 100 hp.
I really like the original Sight Stone and I don't want it to change. Because I will not be able pull off my new support strategy anymore, which was to not buy anything when the game started and rush for the Sight Stone. Around the 4 minute mark, I would have 700 gold for the Sight Stone, and after that the two wards from the Sight Stone almost made us gank proof. And rushing the Sight Stone saves so much money on wards.
I always ask my adc to farm safe until the 4 minute mark. I also check if the enemy jungler will try to do a level 2 gank on bot lane, if he starts top team blue or bottom team red. And if the enemy jungler does not lvl 2 gank, then most of the time his first gank will be around 3:30-4:00 minute mark. I have tried this strategy around 1300-1500 elo with great results.