The way it's written, I thought it applied to both Normal and Hardcore Seasonal Characters. If nothing happens, download GitHub Desktop and try again.

Use Git or checkout with SVN using the web URL. It's much cheaper to make the highest level gems in Reaper of Souls than it was to make them in Diablo 3 vanilla, though the number of gems is the same, with 2 > 1. The entire system received an overhaul for D3v2, with much lower gold costs and an almost total removal of material components. Gem upgrade costs have been tweaked several times.