An expensive lens, but an impressive one for sure. Georges and DigiDirect have both dropped their prices. I believe this is a historical low.
Cheaper alternatives include the Tamron 35-150 f2.0-2.8, as well as the samyang 35-150 f2.0-2.8
Georges + payment & handling fee ($0 with bank deposit) (expired)
Amazing lens if you can deal with the weight/size but I don't have enough kidneys to sell to purchase this.