Most likely. What I know is: JRETs can't be run with anything else (just with other JRETs), so it's hard to get low prices for them. You need many JRETs, at least 15.
You can however run stuff of the same color together, so ordering NOIR and BLOOD together would indeed have been cheaper, especially for JRETs. As for one GB alone: Clearly not enough interest for an US ISO, try nordic kits instead.