Not_a_copIf you are not aware, Thermaltake has two different SKU's for this keyboard. One has Kailh switches and the premium version has Cherry MX switches. The SKU "KB-POI-BLBLUS-01" is the one with the Cherry MX Blue switches which is $99. The SKU "KB-PIZ-KLBLUS-01" is the cheaper one you mentioned which uses Kailh Blue Switches. That is what accounts for the price difference. So if you want Kailh switches you can feel free to order from Amazon. Otherwise pay pretty much the same price and get Cherry MX Blues instead.
edit: I was wrong