On front page https://www.he.net/ there's a special in the top right :)

I believe that kind of low-for-1G-commit pricing is for their fully owned FMT1/FMT2 US CA facility. You have a lot easier peering in EU (AMSIX, DECIX, etc) that will help compared to the US's love of commercial exchanges like Any2/Coresite/Equinix where peering costs practically more than transit.