Of course they publish their spectra,
http://www.valoya.com/spectra/
It's a big website. Takes time to go through it. Pricewise you're probably right about since they're from Finland and not the US but doesn't hurt to ask.
In 3 months or so I will be flowering and Fluence and maybe 2 others who use wide band spectra are on my short list. I would love to grab a Veloya setup, (if they're good enough for Bayer and the cannabis dept at the University of Utah they sure as shit good enough for me), but their lawyers are the ones keeping them away from unlicensed growers, not greed.
Fluence, Bios Lighting and Grow-Ray should be on your list of companies to research also. They are doing science based research to see how to get bigger and better buds, not just trying to see what works on the cheap. Scientist occasionally like to eat too so paying a bit extra might be expected.
Anyway I just wanted to throw in my 2 cents and don't want to distract you further. And I apologize to those who don't like people who challenge the status quo and ask them to think. Here's a little ducky for you to hold and make you feel all warm and safe inside. Enjoy.